diff --git a/src/App.php b/src/App.php
index 95b0716e28..081767cfdb 100644
--- a/src/App.php
+++ b/src/App.php
@@ -33,6 +33,7 @@ use Friendica\Core\Config\ValueObject\Cache;
 use Friendica\Core\Config\Capability\IManageConfigValues;
 use Friendica\Core\PConfig\Capability\IManagePersonalConfigValues;
 use Friendica\Core\L10n;
+use Friendica\Core\Session;
 use Friendica\Core\System;
 use Friendica\Core\Theme;
 use Friendica\Database\Database;
@@ -157,7 +158,7 @@ class App
 
 	public function isLoggedIn(): bool
 	{
-		return local_user() && $this->user_id && ($this->user_id == local_user());
+		return Session::getLocalUser() && $this->user_id && ($this->user_id == Session::getLocalUser());
 	}
 
 	/**
@@ -171,7 +172,7 @@ class App
 
 		$adminlist = explode(',', str_replace(' ', '', $admin_email));
 
-		return local_user() && $admin_email && $this->database->exists('user', ['uid' => $this->getLoggedInUserId(), 'email' => $adminlist]);
+		return Session::getLocalUser() && $admin_email && $this->database->exists('user', ['uid' => $this->getLoggedInUserId(), 'email' => $adminlist]);
 	}
 
 	/**
@@ -495,11 +496,11 @@ class App
 
 		$page_theme = null;
 		// Find the theme that belongs to the user whose stuff we are looking at
-		if (!empty($this->profile_owner) && ($this->profile_owner != local_user())) {
+		if (!empty($this->profile_owner) && ($this->profile_owner != Session::getLocalUser())) {
 			// Allow folks to override user themes and always use their own on their own site.
 			// This works only if the user is on the same server
 			$user = $this->database->selectFirst('user', ['theme'], ['uid' => $this->profile_owner]);
-			if ($this->database->isResult($user) && !local_user()) {
+			if ($this->database->isResult($user) && !Session::getLocalUser()) {
 				$page_theme = $user['theme'];
 			}
 		}
@@ -528,10 +529,10 @@ class App
 
 		$page_mobile_theme = null;
 		// Find the theme that belongs to the user whose stuff we are looking at
-		if (!empty($this->profile_owner) && ($this->profile_owner != local_user())) {
+		if (!empty($this->profile_owner) && ($this->profile_owner != Session::getLocalUser())) {
 			// Allow folks to override user themes and always use their own on their own site.
 			// This works only if the user is on the same server
-			if (!local_user()) {
+			if (!Session::getLocalUser()) {
 				$page_mobile_theme = $this->pConfig->get($this->profile_owner, 'system', 'mobile-theme');
 			}
 		}
@@ -628,7 +629,7 @@ class App
 			}
 
 			// ZRL
-			if (!empty($_GET['zrl']) && $this->mode->isNormal() && !$this->mode->isBackend() && !local_user()) {
+			if (!empty($_GET['zrl']) && $this->mode->isNormal() && !$this->mode->isBackend() && !Session::getLocalUser()) {
 				// Only continue when the given profile link seems valid
 				// Valid profile links contain a path with "/profile/" and no query parameters
 				if ((parse_url($_GET['zrl'], PHP_URL_QUERY) == '') &&
diff --git a/src/App/Page.php b/src/App/Page.php
index dcd2e8832e..d1aa17ad07 100644
--- a/src/App/Page.php
+++ b/src/App/Page.php
@@ -32,6 +32,7 @@ use Friendica\Core\Hook;
 use Friendica\Core\L10n;
 use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
+use Friendica\Core\Session;
 use Friendica\Core\System;
 use Friendica\Core\Theme;
 use Friendica\Module\Response;
@@ -231,7 +232,7 @@ class Page implements ArrayAccess
 	 */
 	private function initHead(App $app, Arguments $args, L10n $l10n, IManageConfigValues $config, IManagePersonalConfigValues $pConfig)
 	{
-		$interval = ((local_user()) ? $pConfig->get(local_user(), 'system', 'update_interval') : 40000);
+		$interval = ((Session::getLocalUser()) ? $pConfig->get(Session::getLocalUser(), 'system', 'update_interval') : 40000);
 
 		// If the update is 'deactivated' set it to the highest integer number (~24 days)
 		if ($interval < 0) {
@@ -276,7 +277,7 @@ class Page implements ArrayAccess
 		 * being first
 		 */
 		$this->page['htmlhead'] = Renderer::replaceMacros($tpl, [
-			'$local_user'      => local_user(),
+			'$local_user'      => Session::getLocalUser(),
 			'$generator'       => 'Friendica' . ' ' . App::VERSION,
 			'$delitem'         => $l10n->t('Delete this item?'),
 			'$blockAuthor'     => $l10n->t('Block this author? They won\'t be able to follow you nor see your public posts, and you won\'t be able to see their posts and their notifications.'),
diff --git a/src/App/Router.php b/src/App/Router.php
index a4fe4f9411..356279e493 100644
--- a/src/App/Router.php
+++ b/src/App/Router.php
@@ -34,6 +34,7 @@ use Friendica\Core\Config\Capability\IManageConfigValues;
 use Friendica\Core\Hook;
 use Friendica\Core\L10n;
 use Friendica\Core\Lock\Capability\ICanLock;
+use Friendica\Core\Session;
 use Friendica\LegacyModule;
 use Friendica\Module\HTTPException\MethodNotAllowed;
 use Friendica\Module\HTTPException\PageNotFound;
@@ -308,7 +309,7 @@ class Router
 			if (Addon::isEnabled($moduleName) && file_exists("addon/{$moduleName}/{$moduleName}.php")) {
 				//Check if module is an app and if public access to apps is allowed or not
 				$privateapps = $this->config->get('config', 'private_addons', false);
-				if ((!local_user()) && Hook::isAddonApp($moduleName) && $privateapps) {
+				if (!Session::getLocalUser() && Hook::isAddonApp($moduleName) && $privateapps) {
 					throw new MethodNotAllowedException($this->l10n->t("You must be logged in to use addons. "));
 				} else {
 					include_once "addon/{$moduleName}/{$moduleName}.php";
diff --git a/src/Content/Conversation.php b/src/Content/Conversation.php
index caab022473..c727ea2fab 100644
--- a/src/Content/Conversation.php
+++ b/src/Content/Conversation.php
@@ -171,7 +171,7 @@ class Conversation
 					continue;
 				}
 
-				if (public_contact() == $activity['author-id']) {
+				if (Session::getPublicContact() == $activity['author-id']) {
 					$conv_responses[$mode][$activity['thr-parent-id']]['self'] = 1;
 				}
 
@@ -296,7 +296,7 @@ class Conversation
 		$x['bang']             = $x['bang']             ?? '';
 		$x['visitor']          = $x['visitor']          ?? 'block';
 		$x['is_owner']         = $x['is_owner']         ?? true;
-		$x['profile_uid']      = $x['profile_uid']      ?? local_user();
+		$x['profile_uid']      = $x['profile_uid']      ?? Session::getLocalUser();
 
 
 		$geotag = !empty($x['allow_location']) ? Renderer::replaceMacros(Renderer::getMarkupTemplate('jot_geotag.tpl'), []) : '';
@@ -359,7 +359,7 @@ class Conversation
 			'$title'               => $x['title'] ?? '',
 			'$placeholdertitle'    => $this->l10n->t('Set title'),
 			'$category'            => $x['category'] ?? '',
-			'$placeholdercategory' => Feature::isEnabled(local_user(), 'categories') ? $this->l10n->t("Categories \x28comma-separated list\x29") : '',
+			'$placeholdercategory' => Feature::isEnabled(Session::getLocalUser(), 'categories') ? $this->l10n->t("Categories \x28comma-separated list\x29") : '',
 			'$scheduled_at'        => Temporal::getDateTimeField(
 				new \DateTime(),
 				new \DateTime('now + 6 months'),
@@ -397,7 +397,7 @@ class Conversation
 			'$browser' => $this->l10n->t('Browser'),
 
 			'$compose_link_title'  => $this->l10n->t('Open Compose page'),
-			'$always_open_compose' => $this->pConfig->get(local_user(), 'frio', 'always_open_compose', false),
+			'$always_open_compose' => $this->pConfig->get(Session::getLocalUser(), 'frio', 'always_open_compose', false),
 		]);
 
 
@@ -436,7 +436,7 @@ class Conversation
 		$this->page->registerStylesheet(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput.css'));
 		$this->page->registerStylesheet(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput-typeahead.css'));
 
-		$ssl_state = (local_user() ? true : false);
+		$ssl_state = (Session::getLocalUser() ? true : false);
 
 		$live_update_div = '';
 
@@ -488,11 +488,11 @@ class Conversation
 				}
 			}
 		} elseif ($mode === 'notes') {
-			$items = $this->addChildren($items, false, $order, local_user(), $mode);
+			$items = $this->addChildren($items, false, $order, Session::getLocalUser(), $mode);
 
 			if (!$update) {
 				$live_update_div = '<div id="live-notes"></div>' . "\r\n"
-					. "<script> var profile_uid = " . local_user()
+					. "<script> var profile_uid = " . Session::getLocalUser()
 					. "; var netargs = '/?f='; </script>\r\n";
 			}
 		} elseif ($mode === 'display') {
@@ -526,7 +526,7 @@ class Conversation
 			$live_update_div = '<div id="live-search"></div>' . "\r\n";
 		}
 
-		$page_dropping = ((local_user() && local_user() == $uid) ? true : false);
+		$page_dropping = ((Session::getLocalUser() && Session::getLocalUser() == $uid) ? true : false);
 
 		if (!$update) {
 			$_SESSION['return_path'] = $this->args->getQueryString();
@@ -546,7 +546,7 @@ class Conversation
 			'announce'    => [],
 		];
 
-		if ($this->pConfig->get(local_user(), 'system', 'hide_dislike')) {
+		if ($this->pConfig->get(Session::getLocalUser(), 'system', 'hide_dislike')) {
 			unset($conv_responses['dislike']);
 		}
 
@@ -564,7 +564,7 @@ class Conversation
 				$writable = $items[0]['writable'] || ($items[0]['uid'] == 0) && in_array($items[0]['network'], Protocol::FEDERATED);
 			}
 
-			if (!local_user()) {
+			if (!Session::getLocalUser()) {
 				$writable = false;
 			}
 
@@ -597,7 +597,7 @@ class Conversation
 					$threadsid++;
 
 					// prevent private email from leaking.
-					if ($item['network'] === Protocol::MAIL && local_user() != $item['uid']) {
+					if ($item['network'] === Protocol::MAIL && Session::getLocalUser() != $item['uid']) {
 						continue;
 					}
 
@@ -641,17 +641,17 @@ class Conversation
 						'announce' => null,
 					];
 
-					if ($this->pConfig->get(local_user(), 'system', 'hide_dislike')) {
+					if ($this->pConfig->get(Session::getLocalUser(), 'system', 'hide_dislike')) {
 						unset($likebuttons['dislike']);
 					}
 
 					$body_html = ItemModel::prepareBody($item, true, $preview);
 
-					[$categories, $folders] = $this->item->determineCategoriesTerms($item, local_user());
+					[$categories, $folders] = $this->item->determineCategoriesTerms($item, Session::getLocalUser());
 
 					if (!empty($item['title'])) {
 						$title = $item['title'];
-					} elseif (!empty($item['content-warning']) && $this->pConfig->get(local_user(), 'system', 'disable_cw', false)) {
+					} elseif (!empty($item['content-warning']) && $this->pConfig->get(Session::getLocalUser(), 'system', 'disable_cw', false)) {
 						$title = ucfirst($item['content-warning']);
 					} else {
 						$title = '';
@@ -745,7 +745,7 @@ class Conversation
 					$this->builtinActivityPuller($item, $conv_responses);
 
 					// Only add what is visible
-					if ($item['network'] === Protocol::MAIL && local_user() != $item['uid']) {
+					if ($item['network'] === Protocol::MAIL && Session::getLocalUser() != $item['uid']) {
 						continue;
 					}
 
@@ -790,11 +790,11 @@ class Conversation
 
 	private function getBlocklist(): array
 	{
-		if (!local_user()) {
+		if (!Session::getLocalUser()) {
 			return [];
 		}
 
-		$str_blocked = str_replace(["\n", "\r"], ",", $this->pConfig->get(local_user(), 'system', 'blocked'));
+		$str_blocked = str_replace(["\n", "\r"], ",", $this->pConfig->get(Session::getLocalUser(), 'system', 'blocked'));
 		if (empty($str_blocked)) {
 			return [];
 		}
@@ -864,7 +864,7 @@ class Conversation
 				$row['direction'] = ['direction' => 4, 'title' => $this->l10n->t('You subscribed to one or more tags in this post.')];
 				break;
 			case ItemModel::PR_ANNOUNCEMENT:
-				if (!empty($row['causer-id']) && $this->pConfig->get(local_user(), 'system', 'display_resharer')) {
+				if (!empty($row['causer-id']) && $this->pConfig->get(Session::getLocalUser(), 'system', 'display_resharer')) {
 					$row['owner-id']     = $row['causer-id'];
 					$row['owner-link']   = $row['causer-link'];
 					$row['owner-avatar'] = $row['causer-avatar'];
@@ -1216,7 +1216,7 @@ class Conversation
 			$parents[$i]['children'] = $this->sortItemChildren($parents[$i]['children']);
 		}
 
-		if (!$this->pConfig->get(local_user(), 'system', 'no_smart_threading', 0)) {
+		if (!$this->pConfig->get(Session::getLocalUser(), 'system', 'no_smart_threading', 0)) {
 			foreach ($parents as $i => $parent) {
 				$parents[$i] = $this->smartFlattenConversation($parent);
 			}
diff --git a/src/Content/ForumManager.php b/src/Content/ForumManager.php
index 51abaa49dd..f5e7761472 100644
--- a/src/Content/ForumManager.php
+++ b/src/Content/ForumManager.php
@@ -24,6 +24,7 @@ namespace Friendica\Content;
 use Friendica\Content\Text\HTML;
 use Friendica\Core\Protocol;
 use Friendica\Core\Renderer;
+use Friendica\Core\Session;
 use Friendica\Database\DBA;
 use Friendica\DI;
 use Friendica\Model\Contact;
@@ -223,7 +224,7 @@ class ForumManager
 				AND NOT `contact`.`pending` AND NOT `contact`.`archive`
 				AND `contact`.`uid` = ?
 				GROUP BY `contact`.`id`",
-			local_user(), Protocol::DFRN, Protocol::ACTIVITYPUB, Contact::TYPE_COMMUNITY, local_user()
+			Session::getLocalUser(), Protocol::DFRN, Protocol::ACTIVITYPUB, Contact::TYPE_COMMUNITY, Session::getLocalUser()
 		);
 
 		return DBA::toArray($stmtContacts);
diff --git a/src/Content/Item.php b/src/Content/Item.php
index b363ad982b..521c015468 100644
--- a/src/Content/Item.php
+++ b/src/Content/Item.php
@@ -27,6 +27,7 @@ use Friendica\Core\Hook;
 use Friendica\Core\L10n;
 use Friendica\Core\Logger;
 use Friendica\Core\Protocol;
+use Friendica\Core\Session;
 use Friendica\Core\System;
 use Friendica\Database\DBA;
 use Friendica\Model\Contact;
@@ -109,7 +110,7 @@ class Item
 			$categories[] = [
 				'name' => $savedFolderName,
 				'url' => $url,
-				'removeurl' => local_user() == $uid ? 'filerm/' . $item['id'] . '?cat=' . rawurlencode($savedFolderName) : '',
+				'removeurl' => Session::getLocalUser() == $uid ? 'filerm/' . $item['id'] . '?cat=' . rawurlencode($savedFolderName) : '',
 				'first' => $first,
 				'last' => false
 			];
@@ -120,12 +121,12 @@ class Item
 			$categories[count($categories) - 1]['last'] = true;
 		}
 
-		if (local_user() == $uid) {
+		if (Session::getLocalUser() == $uid) {
 			foreach (Post\Category::getArrayByURIId($item['uri-id'], $uid, Post\Category::FILE) as $savedFolderName) {
 				$folders[] = [
 					'name' => $savedFolderName,
 					'url' => "#",
-					'removeurl' => local_user() == $uid ? 'filerm/' . $item['id'] . '?term=' . rawurlencode($savedFolderName) : '',
+					'removeurl' => Session::getLocalUser() == $uid ? 'filerm/' . $item['id'] . '?term=' . rawurlencode($savedFolderName) : '',
 					'first' => $first,
 					'last' => false
 				];
@@ -331,7 +332,7 @@ class Item
 		$sub_link = $contact_url = $pm_url = $status_link = '';
 		$photos_link = $posts_link = $block_link = $ignore_link = '';
 
-		if (local_user() && local_user() == $item['uid'] && $item['gravity'] == ItemModel::GRAVITY_PARENT && !$item['self'] && !$item['mention']) {
+		if (Session::getLocalUser() && Session::getLocalUser() == $item['uid'] && $item['gravity'] == ItemModel::GRAVITY_PARENT && !$item['self'] && !$item['mention']) {
 			$sub_link = 'javascript:doFollowThread(' . $item['id'] . '); return false;';
 		}
 
@@ -348,7 +349,7 @@ class Item
 		$pcid = $item['author-id'];
 		$network = '';
 		$rel = 0;
-		$condition = ['uid' => local_user(), 'uri-id' => $item['author-uri-id']];
+		$condition = ['uid' => Session::getLocalUser(), 'uri-id' => $item['author-uri-id']];
 		$contact = DBA::selectFirst('contact', ['id', 'network', 'rel'], $condition);
 		if (DBA::isResult($contact)) {
 			$cid = $contact['id'];
@@ -378,7 +379,7 @@ class Item
 			}
 		}
 
-		if (local_user()) {
+		if (Session::getLocalUser()) {
 			$menu = [
 				$this->l10n->t('Follow Thread') => $sub_link,
 				$this->l10n->t('View Status') => $status_link,
@@ -439,7 +440,7 @@ class Item
 		return (!($this->activity->match($item['verb'], Activity::FOLLOW) &&
 			$item['object-type'] === Activity\ObjectType::NOTE &&
 			empty($item['self']) &&
-			$item['uid'] == local_user())
+			$item['uid'] == Session::getLocalUser())
 		);
 	}
 
diff --git a/src/Content/Nav.php b/src/Content/Nav.php
index b43e926e8c..c66758a6df 100644
--- a/src/Content/Nav.php
+++ b/src/Content/Nav.php
@@ -127,7 +127,7 @@ class Nav
 
 		//Don't populate apps_menu if apps are private
 		$privateapps = DI::config()->get('config', 'private_addons', false);
-		if (local_user() || !$privateapps) {
+		if (Session::getLocalUser() || !$privateapps) {
 			$arr = ['app_menu' => self::$app_menu];
 
 			Hook::callAll('app_menu', $arr);
@@ -149,7 +149,7 @@ class Nav
 	 */
 	private static function getInfo(App $a): array
 	{
-		$ssl_state = (bool) local_user();
+		$ssl_state = (bool) Session::getLocalUser();
 
 		/*
 		 * Our network is distributed, and as you visit friends some of the
@@ -211,7 +211,7 @@ class Nav
 			$homelink = DI::session()->get('visitor_home', '');
 		}
 
-		if ((DI::args()->getModuleName() != 'home') && (! (local_user()))) {
+		if ((DI::args()->getModuleName() != 'home') && (! (Session::getLocalUser()))) {
 			$nav['home'] = [$homelink, DI::l10n()->t('Home'), '', DI::l10n()->t('Home Page')];
 		}
 
@@ -229,7 +229,7 @@ class Nav
 			$nav['apps'] = ['apps', DI::l10n()->t('Apps'), '', DI::l10n()->t('Addon applications, utilities, games')];
 		}
 
-		if (local_user() || !DI::config()->get('system', 'local_search')) {
+		if (Session::getLocalUser() || !DI::config()->get('system', 'local_search')) {
 			$nav['search'] = ['search', DI::l10n()->t('Search'), '', DI::l10n()->t('Search site content')];
 
 			$nav['searchoption'] = [
@@ -252,12 +252,12 @@ class Nav
 			}
 		}
 
-		if ((local_user() || DI::config()->get('system', 'community_page_style') != Community::DISABLED_VISITOR) &&
+		if ((Session::getLocalUser() || DI::config()->get('system', 'community_page_style') != Community::DISABLED_VISITOR) &&
 			!(DI::config()->get('system', 'community_page_style') == Community::DISABLED)) {
 			$nav['community'] = ['community', DI::l10n()->t('Community'), '', DI::l10n()->t('Conversations on this and other servers')];
 		}
 
-		if (local_user()) {
+		if (Session::getLocalUser()) {
 			$nav['events'] = ['events', DI::l10n()->t('Events'), '', DI::l10n()->t('Events and Calendar')];
 		}
 
@@ -270,7 +270,7 @@ class Nav
 		}
 
 		// The following nav links are only show to logged in users
-		if (local_user() && !empty($a->getLoggedInUserNickname())) {
+		if (Session::getLocalUser() && !empty($a->getLoggedInUserNickname())) {
 			$nav['network'] = ['network', DI::l10n()->t('Network'), '', DI::l10n()->t('Conversations from your friends')];
 
 			$nav['home'] = ['profile/' . $a->getLoggedInUserNickname(), DI::l10n()->t('Home'), '', DI::l10n()->t('Your posts and conversations')];
@@ -288,7 +288,7 @@ class Nav
 			$nav['messages']['outbox'] = ['message/sent', DI::l10n()->t('Outbox'), '', DI::l10n()->t('Outbox')];
 			$nav['messages']['new'] = ['message/new', DI::l10n()->t('New Message'), '', DI::l10n()->t('New Message')];
 
-			if (User::hasIdentities(DI::session()->get('submanage') ?: local_user())) {
+			if (User::hasIdentities(DI::session()->get('submanage') ?: Session::getLocalUser())) {
 				$nav['delegation'] = ['delegation', DI::l10n()->t('Accounts'), '', DI::l10n()->t('Manage other pages')];
 			}
 
diff --git a/src/Content/Smilies.php b/src/Content/Smilies.php
index 04dcf99070..68093e843d 100644
--- a/src/Content/Smilies.php
+++ b/src/Content/Smilies.php
@@ -22,6 +22,7 @@
 namespace Friendica\Content;
 
 use Friendica\Core\Hook;
+use Friendica\Core\Session;
 use Friendica\DI;
 use Friendica\Util\Strings;
 
@@ -213,7 +214,7 @@ class Smilies
 	public static function replaceFromArray(string $text, array $smilies, bool $no_images = false): string
 	{
 		if (intval(DI::config()->get('system', 'no_smilies'))
-			|| (local_user() && intval(DI::pConfig()->get(local_user(), 'system', 'no_smilies')))
+			|| (Session::getLocalUser() && intval(DI::pConfig()->get(Session::getLocalUser(), 'system', 'no_smilies')))
 		) {
 			return $text;
 		}
diff --git a/src/Content/Widget.php b/src/Content/Widget.php
index f1f62c33fc..06841ed924 100644
--- a/src/Content/Widget.php
+++ b/src/Content/Widget.php
@@ -26,6 +26,7 @@ use Friendica\Core\Cache\Enum\Duration;
 use Friendica\Core\Protocol;
 use Friendica\Core\Renderer;
 use Friendica\Core\Search;
+use Friendica\Core\Session;
 use Friendica\Database\DBA;
 use Friendica\DI;
 use Friendica\Model\Contact;
@@ -66,7 +67,7 @@ class Widget
 		$global_dir = Search::getGlobalDirectory();
 
 		if (DI::config()->get('system', 'invitation_only')) {
-			$x = intval(DI::pConfig()->get(local_user(), 'system', 'invites_remaining'));
+			$x = intval(DI::pConfig()->get(Session::getLocalUser(), 'system', 'invites_remaining'));
 			if ($x || DI::app()->isSiteAdmin()) {
 				DI::page()['aside'] .= '<div class="side-link widget" id="side-invite-remain">'
 					. DI::l10n()->tt('%d invitation available', '%d invitations available', $x)
@@ -195,7 +196,7 @@ class Widget
 	 */
 	public static function groups(string $baseurl, string $selected = ''): string
 	{
-		if (!local_user()) {
+		if (!Session::getLocalUser()) {
 			return '';
 		}
 
@@ -204,7 +205,7 @@ class Widget
 				'ref'  => $group['id'],
 				'name' => $group['name']
 			];
-		}, Group::getByUserId(local_user()));
+		}, Group::getByUserId(Session::getLocalUser()));
 
 		return self::filter(
 			'group',
@@ -227,7 +228,7 @@ class Widget
 	 */
 	public static function contactRels(string $baseurl, string $selected = ''): string
 	{
-		if (!local_user()) {
+		if (!Session::getLocalUser()) {
 			return '';
 		}
 
@@ -258,13 +259,13 @@ class Widget
 	 */
 	public static function networks(string $baseurl, string $selected = ''): string
 	{
-		if (!local_user()) {
+		if (!Session::getLocalUser()) {
 			return '';
 		}
 
 		$networks = self::unavailableNetworks();
 		$query = "`uid` = ? AND NOT `deleted` AND `network` != '' AND NOT `network` IN (" . substr(str_repeat("?, ", count($networks)), 0, -2) . ")";
-		$condition = array_merge([$query], array_merge([local_user()], $networks));
+		$condition = array_merge([$query], array_merge([Session::getLocalUser()], $networks));
 
 		$r = DBA::select('contact', ['network'], $condition, ['group_by' => ['network'], 'order' => ['network']]);
 
@@ -299,12 +300,12 @@ class Widget
 	 */
 	public static function fileAs(string $baseurl, string $selected = ''): string
 	{
-		if (!local_user()) {
+		if (!Session::getLocalUser()) {
 			return '';
 		}
 
 		$terms = [];
-		foreach (Post\Category::getArray(local_user(), Post\Category::FILE) as $savedFolderName) {
+		foreach (Post\Category::getArray(Session::getLocalUser(), Post\Category::FILE) as $savedFolderName) {
 			$terms[] = ['ref' => $savedFolderName, 'name' => $savedFolderName];
 		}
 
@@ -361,11 +362,11 @@ class Widget
 	 */
 	public static function commonFriendsVisitor(int $uid, string $nickname): string
 	{
-		if (local_user() == $uid) {
+		if (Session::getLocalUser() == $uid) {
 			return '';
 		}
 
-		$visitorPCid = local_user() ? Contact::getPublicIdByUserId(local_user()) : remote_user();
+		$visitorPCid = Session::getLocalUser() ? Contact::getPublicIdByUserId(Session::getLocalUser()) : Session::getRemoteUser();
 		if (!$visitorPCid) {
 			return '';
 		}
diff --git a/src/Content/Widget/SavedSearches.php b/src/Content/Widget/SavedSearches.php
index bf0e798661..a7cff52f22 100644
--- a/src/Content/Widget/SavedSearches.php
+++ b/src/Content/Widget/SavedSearches.php
@@ -23,6 +23,7 @@ namespace Friendica\Content\Widget;
 
 use Friendica\Core\Renderer;
 use Friendica\Core\Search;
+use Friendica\Core\Session;
 use Friendica\Database\DBA;
 use Friendica\DI;
 
@@ -37,7 +38,7 @@ class SavedSearches
 	public static function getHTML($return_url, $search = '')
 	{
 		$saved = [];
-		$saved_searches = DBA::select('search', ['id', 'term'], ['uid' => local_user()]);
+		$saved_searches = DBA::select('search', ['id', 'term'], ['uid' => Session::getLocalUser()]);
 		while ($saved_search = DBA::fetch($saved_searches)) {
 			$saved[] = [
 				'id'          => $saved_search['id'],
diff --git a/src/Content/Widget/VCard.php b/src/Content/Widget/VCard.php
index 96f35e6584..6ff5f21a43 100644
--- a/src/Content/Widget/VCard.php
+++ b/src/Content/Widget/VCard.php
@@ -26,6 +26,7 @@ use Friendica\Content\Text\BBCode;
 use Friendica\Core\Logger;
 use Friendica\Core\Protocol;
 use Friendica\Core\Renderer;
+use Friendica\Core\Session;
 use Friendica\Core\System;
 use Friendica\DI;
 use Friendica\Model\Contact;
@@ -64,13 +65,13 @@ class VCard
 
 		$photo   = Contact::getPhoto($contact);
 
-		if (local_user()) {
+		if (Session::getLocalUser()) {
 			if ($contact['uid']) {
 				$id      = $contact['id'];
 				$rel     = $contact['rel'];
 				$pending = $contact['pending'];
 			} else {
-				$pcontact = Contact::selectFirst([], ['uid' => local_user(), 'uri-id' => $contact['uri-id']]);
+				$pcontact = Contact::selectFirst([], ['uid' => Session::getLocalUser(), 'uri-id' => $contact['uri-id']]);
 
 				$id      = $pcontact['id'] ?? 0;
 				$rel     = $pcontact['rel'] ?? Contact::NOTHING;
diff --git a/src/Core/ACL.php b/src/Core/ACL.php
index 40612fadfc..dc9b2a0f57 100644
--- a/src/Core/ACL.php
+++ b/src/Core/ACL.php
@@ -62,7 +62,7 @@ class ACL
 		$page->registerStylesheet(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput.css'));
 		$page->registerStylesheet(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput-typeahead.css'));
 
-		$contacts = self::getValidMessageRecipientsForUser(local_user());
+		$contacts = self::getValidMessageRecipientsForUser(Session::getLocalUser());
 
 		$tpl = Renderer::getMarkupTemplate('acl/message_recipient.tpl');
 		$o = Renderer::replaceMacros($tpl, [
diff --git a/src/Core/Search.php b/src/Core/Search.php
index cf3821afcf..6cca544b8f 100644
--- a/src/Core/Search.php
+++ b/src/Core/Search.php
@@ -70,7 +70,7 @@ class Search
 				return $emptyResultList;
 			}
 
-			$contactDetails = Contact::getByURLForUser($user_data['url'] ?? '', local_user());
+			$contactDetails = Contact::getByURLForUser($user_data['url'] ?? '', Session::getLocalUser());
 
 			$result = new ContactResult(
 				$user_data['name'] ?? '',
@@ -136,7 +136,7 @@ class Search
 
 		foreach ($profiles as $profile) {
 			$profile_url = $profile['profile_url'] ?? '';
-			$contactDetails = Contact::getByURLForUser($profile_url, local_user());
+			$contactDetails = Contact::getByURLForUser($profile_url, Session::getLocalUser());
 
 			$result = new ContactResult(
 				$profile['name'] ?? '',
diff --git a/src/Model/Contact.php b/src/Model/Contact.php
index 1a43d140b2..d8a5b387fd 100644
--- a/src/Model/Contact.php
+++ b/src/Model/Contact.php
@@ -1103,7 +1103,7 @@ class Contact
 		$photos_link = '';
 
 		if ($uid == 0) {
-			$uid = local_user();
+			$uid = Session::getLocalUser();
 		}
 
 		if (empty($contact['uid']) || ($contact['uid'] != $uid)) {
@@ -1506,10 +1506,10 @@ class Contact
 
 		if ($thread_mode) {
 			$condition = ["((`$contact_field` = ? AND `gravity` = ?) OR (`author-id` = ? AND `gravity` = ? AND `vid` = ? AND `thr-parent-id` = `parent-uri-id`)) AND " . $sql,
-				$cid, Item::GRAVITY_PARENT, $cid, Item::GRAVITY_ACTIVITY, Verb::getID(Activity::ANNOUNCE), local_user()];
+				$cid, Item::GRAVITY_PARENT, $cid, Item::GRAVITY_ACTIVITY, Verb::getID(Activity::ANNOUNCE), Session::getLocalUser()];
 		} else {
 			$condition = ["`$contact_field` = ? AND `gravity` IN (?, ?) AND " . $sql,
-				$cid, Item::GRAVITY_PARENT, Item::GRAVITY_COMMENT, local_user()];
+				$cid, Item::GRAVITY_PARENT, Item::GRAVITY_COMMENT, Session::getLocalUser()];
 		}
 
 		if (!empty($parent)) {
@@ -1527,10 +1527,10 @@ class Contact
 		}
 
 		if (DI::mode()->isMobile()) {
-			$itemsPerPage = DI::pConfig()->get(local_user(), 'system', 'itemspage_mobile_network',
+			$itemsPerPage = DI::pConfig()->get(Session::getLocalUser(), 'system', 'itemspage_mobile_network',
 				DI::config()->get('system', 'itemspage_network_mobile'));
 		} else {
-			$itemsPerPage = DI::pConfig()->get(local_user(), 'system', 'itemspage_network',
+			$itemsPerPage = DI::pConfig()->get(Session::getLocalUser(), 'system', 'itemspage_network',
 				DI::config()->get('system', 'itemspage_network'));
 		}
 
@@ -1538,7 +1538,7 @@ class Contact
 
 		$params = ['order' => ['received' => true], 'limit' => [$pager->getStart(), $pager->getItemsPerPage()]];
 
-		if (DI::pConfig()->get(local_user(), 'system', 'infinite_scroll')) {
+		if (DI::pConfig()->get(Session::getLocalUser(), 'system', 'infinite_scroll')) {
 			$tpl = Renderer::getMarkupTemplate('infinite_scroll_head.tpl');
 			$o = Renderer::replaceMacros($tpl, ['$reload_uri' => DI::args()->getQueryString()]);
 		} else {
@@ -1547,27 +1547,27 @@ class Contact
 
 		if ($thread_mode) {
 			$fields = ['uri-id', 'thr-parent-id', 'gravity', 'author-id', 'commented'];
-			$items = Post::toArray(Post::selectForUser(local_user(), $fields, $condition, $params));
+			$items = Post::toArray(Post::selectForUser(Session::getLocalUser(), $fields, $condition, $params));
 
 			if ($pager->getStart() == 0) {
-				$cdata = self::getPublicAndUserContactID($cid, local_user());
+				$cdata = self::getPublicAndUserContactID($cid, Session::getLocalUser());
 				if (!empty($cdata['public'])) {
 					$pinned = Post\Collection::selectToArrayForContact($cdata['public'], Post\Collection::FEATURED, $fields);
 					$items = array_merge($items, $pinned);
 				}
 			}
 
-			$o .= DI::conversation()->create($items, 'contacts', $update, false, 'pinned_commented', local_user());
+			$o .= DI::conversation()->create($items, 'contacts', $update, false, 'pinned_commented', Session::getLocalUser());
 		} else {
 			$fields = array_merge(Item::DISPLAY_FIELDLIST, ['featured']);
-			$items = Post::toArray(Post::selectForUser(local_user(), $fields, $condition, $params));
+			$items = Post::toArray(Post::selectForUser(Session::getLocalUser(), $fields, $condition, $params));
 
 			if ($pager->getStart() == 0) {
-				$cdata = self::getPublicAndUserContactID($cid, local_user());
+				$cdata = self::getPublicAndUserContactID($cid, Session::getLocalUser());
 				if (!empty($cdata['public'])) {
 					$condition = ["`uri-id` IN (SELECT `uri-id` FROM `collection-view` WHERE `cid` = ? AND `type` = ?)",
 						$cdata['public'], Post\Collection::FEATURED];
-					$pinned = Post::toArray(Post::selectForUser(local_user(), $fields, $condition, $params));
+					$pinned = Post::toArray(Post::selectForUser(Session::getLocalUser(), $fields, $condition, $params));
 					$items = array_merge($pinned, $items);
 				}
 			}
@@ -1576,7 +1576,7 @@ class Contact
 		}
 
 		if (!$update) {
-			if (DI::pConfig()->get(local_user(), 'system', 'infinite_scroll')) {
+			if (DI::pConfig()->get(Session::getLocalUser(), 'system', 'infinite_scroll')) {
 				$o .= HTML::scrollLoader();
 			} else {
 				$o .= $pager->renderMinimal(count($items));
@@ -3286,7 +3286,7 @@ class Contact
 			return $url;
 		}
 
-		if (DI::pConfig()->get(local_user(), 'system', 'stay_local') && ($url == '')) {
+		if (DI::pConfig()->get(Session::getLocalUser(), 'system', 'stay_local') && ($url == '')) {
 			return 'contact/' . $contact['id'] . '/conversations';
 		}
 
diff --git a/src/Model/Contact/Group.php b/src/Model/Contact/Group.php
index 0f0b4965cd..838af8a278 100644
--- a/src/Model/Contact/Group.php
+++ b/src/Model/Contact/Group.php
@@ -21,6 +21,7 @@
 
 namespace Friendica\Model\Contact;
 
+use Friendica\Core\Session;
 use Friendica\Database\DBA;
 use Friendica\Model\Contact;
 
@@ -53,7 +54,7 @@ class Group
 				AND NOT `contact`.`pending`
 				ORDER BY `contact`.`name` ASC',
 				$gid,
-				local_user()
+				Session::getLocalUser()
 			);
 
 			if (DBA::isResult($stmt)) {
diff --git a/src/Model/Event.php b/src/Model/Event.php
index db66a330f9..7437137d05 100644
--- a/src/Model/Event.php
+++ b/src/Model/Event.php
@@ -26,6 +26,7 @@ use Friendica\Core\Hook;
 use Friendica\Core\Logger;
 use Friendica\Core\Protocol;
 use Friendica\Core\Renderer;
+use Friendica\Core\Session;
 use Friendica\Core\System;
 use Friendica\Database\DBA;
 use Friendica\DI;
@@ -410,7 +411,7 @@ class Event
 	public static function getStrings(): array
 	{
 		// First day of the week (0 = Sunday).
-		$firstDay = DI::pConfig()->get(local_user(), 'system', 'first_day_of_week', 0);
+		$firstDay = DI::pConfig()->get(Session::getLocalUser(), 'system', 'first_day_of_week', 0);
 
 		$i18n = [
 			"firstDay" => $firstDay,
@@ -608,7 +609,7 @@ class Event
 			$edit = null;
 			$copy = null;
 			$drop = null;
-			if (local_user() && local_user() == $event['uid'] && $event['type'] == 'event') {
+			if (Session::getLocalUser() && Session::getLocalUser() == $event['uid'] && $event['type'] == 'event') {
 				$edit = !$event['cid'] ? [DI::baseUrl() . '/events/event/' . $event['id'], DI::l10n()->t('Edit event')     , '', ''] : null;
 				$copy = !$event['cid'] ? [DI::baseUrl() . '/events/copy/' . $event['id'] , DI::l10n()->t('Duplicate event'), '', ''] : null;
 				$drop =                  [DI::baseUrl() . '/events/drop/' . $event['id'] , DI::l10n()->t('Delete event')   , '', ''];
@@ -775,7 +776,7 @@ class Event
 		// Does the user who requests happen to be the owner of the events
 		// requested? then show all of your events, otherwise only those that
 		// don't have limitations set in allow_cid and allow_gid.
-		if (local_user() != $uid) {
+		if (Session::getLocalUser() != $uid) {
 			$conditions += ['allow_cid' => '', 'allow_gid' => ''];
 		}
 
diff --git a/src/Model/Group.php b/src/Model/Group.php
index 3487ab53d2..52aa4bca67 100644
--- a/src/Model/Group.php
+++ b/src/Model/Group.php
@@ -25,6 +25,7 @@ use Friendica\BaseModule;
 use Friendica\Core\Logger;
 use Friendica\Core\Protocol;
 use Friendica\Core\Renderer;
+use Friendica\Core\Session;
 use Friendica\Database\Database;
 use Friendica\Database\DBA;
 use Friendica\DI;
@@ -187,8 +188,8 @@ class Group
 					) AS `count`
 				FROM `group`
 				WHERE `group`.`uid` = ?;",
-			local_user(),
-			local_user()
+			Session::getLocalUser(),
+			Session::getLocalUser()
 		);
 
 		return DBA::toArray($stmt);
@@ -526,7 +527,7 @@ class Group
 	 */
 	public static function sidebarWidget(string $every = 'contact', string $each = 'group', string $editmode = 'standard', $group_id = '', int $cid = 0)
 	{
-		if (!local_user()) {
+		if (!Session::getLocalUser()) {
 			return '';
 		}
 
@@ -544,7 +545,7 @@ class Group
 			$member_of = self::getIdsByContactId($cid);
 		}
 
-		$stmt = DBA::select('group', [], ['deleted' => false, 'uid' => local_user(), 'cid' => null], ['order' => ['name']]);
+		$stmt = DBA::select('group', [], ['deleted' => false, 'uid' => Session::getLocalUser(), 'cid' => null], ['order' => ['name']]);
 		while ($group = DBA::fetch($stmt)) {
 			$selected = (($group_id == $group['id']) ? ' group-selected' : '');
 
diff --git a/src/Model/Item.php b/src/Model/Item.php
index 7ca82f7e62..e53d64d5e1 100644
--- a/src/Model/Item.php
+++ b/src/Model/Item.php
@@ -1066,7 +1066,7 @@ class Item
 			}
 
 			// We have to tell the hooks who we are - this really should be improved
-			if (!local_user()) {
+			if (!Session::getLocalUser()) {
 				$_SESSION['authenticated'] = true;
 				$_SESSION['uid'] = $uid;
 				$dummy_session = true;
@@ -2775,7 +2775,7 @@ class Item
 	 */
 	public static function getPermissionsConditionArrayByUserId(int $owner_id): array
 	{
-		$local_user = local_user();
+		$local_user = Session::getLocalUser();
 		$remote_user = Session::getRemoteContactID($owner_id);
 
 		// default permissions - anonymous user
@@ -2807,7 +2807,7 @@ class Item
 	 */
 	public static function getPermissionsSQLByUserId(int $owner_id, string $table = ''): string
 	{
-		$local_user = local_user();
+		$local_user = Session::getLocalUser();
 		$remote_user = Session::getRemoteContactID($owner_id);
 
 		if (!empty($table)) {
@@ -3006,8 +3006,8 @@ class Item
 
 		// Compile eventual content filter reasons
 		$filter_reasons = [];
-		if (!$is_preview && public_contact() != $item['author-id']) {
-			if (!empty($item['content-warning']) && (!local_user() || !DI::pConfig()->get(local_user(), 'system', 'disable_cw', false))) {
+		if (!$is_preview && Session::getPublicContact() != $item['author-id']) {
+			if (!empty($item['content-warning']) && (!Session::getLocalUser() || !DI::pConfig()->get(Session::getLocalUser(), 'system', 'disable_cw', false))) {
 				$filter_reasons[] = DI::l10n()->t('Content warning: %s', $item['content-warning']);
 			}
 
@@ -3443,7 +3443,7 @@ class Item
 			$plink = $item['uri'];
 		}
 
-		if (local_user()) {
+		if (Session::getLocalUser()) {
 			$ret = [
 				'href' => "display/" . $item['guid'],
 				'orig' => "display/" . $item['guid'],
diff --git a/src/Model/Mail.php b/src/Model/Mail.php
index cdcd2258c1..84e9ef6a4a 100644
--- a/src/Model/Mail.php
+++ b/src/Model/Mail.php
@@ -23,6 +23,7 @@ namespace Friendica\Model;
 
 use Friendica\Core\ACL;
 use Friendica\Core\Logger;
+use Friendica\Core\Session;
 use Friendica\Core\System;
 use Friendica\Core\Worker;
 use Friendica\Database\DBA;
@@ -137,12 +138,12 @@ class Mail
 			$subject = DI::l10n()->t('[no subject]');
 		}
 
-		$me = DBA::selectFirst('contact', [], ['uid' => local_user(), 'self' => true]);
+		$me = DBA::selectFirst('contact', [], ['uid' => Session::getLocalUser(), 'self' => true]);
 		if (!DBA::isResult($me)) {
 			return -2;
 		}
 
-		$contacts = ACL::getValidMessageRecipientsForUser(local_user());
+		$contacts = ACL::getValidMessageRecipientsForUser(Session::getLocalUser());
 
 		$contactIndex = array_search($recipient, array_column($contacts, 'id'));
 		if ($contactIndex === false) {
@@ -151,7 +152,7 @@ class Mail
 
 		$contact = $contacts[$contactIndex];
 
-		Photo::setPermissionFromBody($body, local_user(), $me['id'],  '<' . $contact['id'] . '>', '', '', '');
+		Photo::setPermissionFromBody($body, Session::getLocalUser(), $me['id'],  '<' . $contact['id'] . '>', '', '', '');
 
 		$guid = System::createUUID();
 		$uri = Item::newURI($guid);
@@ -164,7 +165,7 @@ class Mail
 		if (strlen($replyto)) {
 			$reply = true;
 			$condition = ["`uid` = ? AND (`uri` = ? OR `parent-uri` = ?)",
-				local_user(), $replyto, $replyto];
+				Session::getLocalUser(), $replyto, $replyto];
 			$mail = DBA::selectFirst('mail', ['convid'], $condition);
 			if (DBA::isResult($mail)) {
 				$convid = $mail['convid'];
@@ -177,7 +178,7 @@ class Mail
 			$conv_guid = System::createUUID();
 			$convuri = $contact['addr'] . ':' . $conv_guid;
 
-			$fields = ['uid' => local_user(), 'guid' => $conv_guid, 'creator' => $me['addr'],
+			$fields = ['uid' => Session::getLocalUser(), 'guid' => $conv_guid, 'creator' => $me['addr'],
 				'created' => DateTimeFormat::utcNow(), 'updated' => DateTimeFormat::utcNow(),
 				'subject' => $subject, 'recips' => $contact['addr'] . ';' . $me['addr']];
 			if (DBA::insert('conv', $fields)) {
@@ -196,7 +197,7 @@ class Mail
 
 		$post_id = self::insert(
 			[
-				'uid' => local_user(),
+				'uid' => Session::getLocalUser(),
 				'guid' => $guid,
 				'convid' => $convid,
 				'from-name' => $me['name'],
@@ -232,7 +233,7 @@ class Mail
 				foreach ($images as $image) {
 					$image_rid = Photo::ridFromURI($image);
 					if (!empty($image_rid)) {
-						Photo::update(['allow-cid' => '<' . $recipient . '>'], ['resource-id' => $image_rid, 'album' => 'Wall Photos', 'uid' => local_user()]);
+						Photo::update(['allow-cid' => '<' . $recipient . '>'], ['resource-id' => $image_rid, 'album' => 'Wall Photos', 'uid' => Session::getLocalUser()]);
 					}
 				}
 			}
diff --git a/src/Model/Photo.php b/src/Model/Photo.php
index 4d9ff4b6af..035b32b1f0 100644
--- a/src/Model/Photo.php
+++ b/src/Model/Photo.php
@@ -23,9 +23,9 @@ namespace Friendica\Model;
 
 use Friendica\Core\Cache\Enum\Duration;
 use Friendica\Core\Logger;
+use Friendica\Core\Session;
 use Friendica\Core\System;
 use Friendica\Database\DBA;
-use Friendica\Database\DBStructure;
 use Friendica\DI;
 use Friendica\Core\Storage\Type\ExternalResource;
 use Friendica\Core\Storage\Exception\InvalidClassStorageException;
@@ -639,10 +639,10 @@ class Photo
 	{
 		$sql_extra = Security::getPermissionsSQLByUserId($uid);
 
-		$avatar_type = (local_user() && (local_user() == $uid)) ? self::USER_AVATAR : self::DEFAULT;
-		$banner_type = (local_user() && (local_user() == $uid)) ? self::USER_BANNER : self::DEFAULT;
+		$avatar_type = (Session::getLocalUser() && (Session::getLocalUser() == $uid)) ? self::USER_AVATAR : self::DEFAULT;
+		$banner_type = (Session::getLocalUser() && (Session::getLocalUser() == $uid)) ? self::USER_BANNER : self::DEFAULT;
 
-		$key = 'photo_albums:' . $uid . ':' . local_user() . ':' . remote_user();
+		$key = 'photo_albums:' . $uid . ':' . Session::getLocalUser() . ':' . Session::getRemoteUser();
 		$albums = DI::cache()->get($key);
 
 		if (is_null($albums) || $update) {
@@ -681,7 +681,7 @@ class Photo
 	 */
 	public static function clearAlbumCache(int $uid)
 	{
-		$key = 'photo_albums:' . $uid . ':' . local_user() . ':' . remote_user();
+		$key = 'photo_albums:' . $uid . ':' . Session::getLocalUser() . ':' . Session::getRemoteUser();
 		DI::cache()->set($key, null, Duration::DAY);
 	}
 
diff --git a/src/Model/Post.php b/src/Model/Post.php
index e78e0f706f..d3e1f2900c 100644
--- a/src/Model/Post.php
+++ b/src/Model/Post.php
@@ -23,6 +23,7 @@ namespace Friendica\Model;
 
 use BadMethodCallException;
 use Friendica\Core\Logger;
+use Friendica\Core\Session;
 use Friendica\Core\System;
 use Friendica\Database\Database;
 use Friendica\Database\DBA;
@@ -508,7 +509,7 @@ class Post
 	{
 		$affected = 0;
 
-		Logger::info('Start Update', ['fields' => $fields, 'condition' => $condition, 'uid' => local_user(),'callstack' => System::callstack(10)]);
+		Logger::info('Start Update', ['fields' => $fields, 'condition' => $condition, 'uid' => Session::getLocalUser(),'callstack' => System::callstack(10)]);
 
 		// Don't allow changes to fields that are responsible for the relation between the records
 		unset($fields['id']);
diff --git a/src/Model/Profile.php b/src/Model/Profile.php
index d9467471f7..6574a53ac2 100644
--- a/src/Model/Profile.php
+++ b/src/Model/Profile.php
@@ -239,7 +239,7 @@ class Profile
 
 		DI::page()['title'] = $profile['name'] . ' @ ' . DI::config()->get('config', 'sitename');
 
-		if (!local_user()) {
+		if (!Session::getLocalUser()) {
 			$a->setCurrentTheme($profile['theme']);
 			$a->setCurrentMobileTheme(DI::pConfig()->get($a->getProfileOwner(), 'system', 'mobile_theme') ?? '');
 		}
@@ -295,8 +295,8 @@ class Profile
 
 		$profile_contact = [];
 
-		if (local_user() && ($profile['uid'] ?? 0) != local_user()) {
-			$profile_contact = Contact::getByURL($profile['nurl'], null, [], local_user());
+		if (Session::getLocalUser() && ($profile['uid'] ?? 0) != Session::getLocalUser()) {
+			$profile_contact = Contact::getByURL($profile['nurl'], null, [], Session::getLocalUser());
 		}
 		if (!empty($profile['cid']) && self::getMyURL()) {
 			$profile_contact = Contact::selectFirst([], ['id' => $profile['cid']]);
@@ -413,7 +413,7 @@ class Profile
 		}
 
 		if (!$block && $show_contacts) {
-			$contact_block = ContactBlock::getHTML($profile, local_user());
+			$contact_block = ContactBlock::getHTML($profile, Session::getLocalUser());
 
 			if (is_array($profile) && !$profile['hide-friends']) {
 				$contact_count = DBA::count('contact', [
@@ -493,7 +493,7 @@ class Profile
 	 */
 	public static function getBirthdays(): string
 	{
-		if (!local_user() || DI::mode()->isMobile() || DI::mode()->isMobile()) {
+		if (!Session::getLocalUser() || DI::mode()->isMobile() || DI::mode()->isMobile()) {
 			return '';
 		}
 
@@ -506,7 +506,7 @@ class Profile
 
 		$bd_short = DI::l10n()->t('F d');
 
-		$cacheKey = 'get_birthdays:' . local_user();
+		$cacheKey = 'get_birthdays:' . Session::getLocalUser();
 		$events   = DI::cache()->get($cacheKey);
 		if (is_null($events)) {
 			$result = DBA::p(
@@ -523,7 +523,7 @@ class Profile
 				ORDER BY `start`",
 				Contact::SHARING,
 				Contact::FRIEND,
-				local_user(),
+				Session::getLocalUser(),
 				DateTimeFormat::utc('now + 6 days'),
 				DateTimeFormat::utcNow()
 			);
@@ -595,7 +595,7 @@ class Profile
 		$a = DI::app();
 		$o = '';
 
-		if (!local_user() || DI::mode()->isMobile() || DI::mode()->isMobile()) {
+		if (!Session::getLocalUser() || DI::mode()->isMobile() || DI::mode()->isMobile()) {
 			return $o;
 		}
 
@@ -610,7 +610,7 @@ class Profile
 		$classtoday = '';
 
 		$condition = ["`uid` = ? AND `type` != 'birthday' AND `start` < ? AND `start` >= ?",
-			local_user(), DateTimeFormat::utc('now + 7 days'), DateTimeFormat::utc('now - 1 days')];
+			Session::getLocalUser(), DateTimeFormat::utc('now + 7 days'), DateTimeFormat::utc('now - 1 days')];
 		$s = DBA::select('event', [], $condition, ['order' => ['start']]);
 
 		$r = [];
@@ -620,7 +620,7 @@ class Profile
 			$total = 0;
 
 			while ($rr = DBA::fetch($s)) {
-				$condition = ['parent-uri' => $rr['uri'], 'uid' => $rr['uid'], 'author-id' => public_contact(),
+				$condition = ['parent-uri' => $rr['uri'], 'uid' => $rr['uid'], 'author-id' => Session::getPublicContact(),
 					'vid' => [Verb::getID(Activity::ATTEND), Verb::getID(Activity::ATTENDMAYBE)],
 					'visible' => true, 'deleted' => false];
 				if (!Post::exists($condition)) {
@@ -712,7 +712,7 @@ class Profile
 		$my_url = self::getMyURL();
 		$my_url = Network::isUrlValid($my_url);
 
-		if (empty($my_url) || local_user()) {
+		if (empty($my_url) || Session::getLocalUser()) {
 			return;
 		}
 
@@ -730,7 +730,7 @@ class Profile
 
 		$contact = DBA::selectFirst('contact',['id', 'url'], ['id' => $cid]);
 
-		if (DBA::isResult($contact) && remote_user() && remote_user() == $contact['id']) {
+		if (DBA::isResult($contact) && Session::getRemoteUser() && Session::getRemoteUser() == $contact['id']) {
 			Logger::info('The visitor ' . $my_url . ' is already authenticated');
 			return;
 		}
@@ -916,7 +916,7 @@ class Profile
 	 */
 	public static function getThemeUid(App $a): int
 	{
-		return local_user() ?: $a->getProfileOwner();
+		return Session::getLocalUser() ?: $a->getProfileOwner();
 	}
 
 	/**