diff --git a/administrator/components/com_admin/script.php b/administrator/components/com_admin/script.php
index f7c70206341f3..8923b67508116 100644
--- a/administrator/components/com_admin/script.php
+++ b/administrator/components/com_admin/script.php
@@ -22,6 +22,7 @@
 use Joomla\CMS\Table\Table;
 use Joomla\CMS\Uri\Uri;
 use Joomla\Database\ParameterType;
+use Joomla\Filesystem\Path;
 use Joomla\Registry\Registry;
 
 // phpcs:disable PSR1.Files.SideEffects
@@ -2458,7 +2459,7 @@ public function deleteUnexistingFiles($dryRun = false, $suppressOutput = false)
         }
 
         foreach ($folders as $folder) {
-            if ($folderExists = Folder::exists(JPATH_ROOT . $folder)) {
+            if ($folderExists = is_dir(Path::clean(JPATH_ROOT . $folder))) {
                 $status['folders_exist'][] = $folder;
 
                 if ($dryRun === false) {
diff --git a/administrator/components/com_config/src/Model/ApplicationModel.php b/administrator/components/com_config/src/Model/ApplicationModel.php
index 35699473633c3..528205007d615 100644
--- a/administrator/components/com_config/src/Model/ApplicationModel.php
+++ b/administrator/components/com_config/src/Model/ApplicationModel.php
@@ -496,7 +496,7 @@ public function save($data)
             $data['session_filesystem_path'] = Path::clean($data['session_filesystem_path']);
 
             if ($currentPath !== $data['session_filesystem_path']) {
-                if (!Folder::exists($data['session_filesystem_path']) && !Folder::create($data['session_filesystem_path'])) {
+                if (!is_dir(Path::clean($data['session_filesystem_path'])) && !Folder::create($data['session_filesystem_path'])) {
                     try {
                         Log::add(
                             Text::sprintf(
diff --git a/administrator/components/com_menus/src/Helper/MenusHelper.php b/administrator/components/com_menus/src/Helper/MenusHelper.php
index 4ba123ed1f344..c2b963f576b02 100644
--- a/administrator/components/com_menus/src/Helper/MenusHelper.php
+++ b/administrator/components/com_menus/src/Helper/MenusHelper.php
@@ -615,7 +615,7 @@ public static function getPresets()
 
                 $folder = JPATH_ADMINISTRATOR . '/components/' . $component->option . '/presets/';
 
-                if (!Folder::exists($folder)) {
+                if (!is_dir($folder)) {
                     continue;
                 }
 
diff --git a/administrator/components/com_templates/src/Model/TemplateModel.php b/administrator/components/com_templates/src/Model/TemplateModel.php
index 0f2ef4130dd6e..b933ddb13d2c1 100644
--- a/administrator/components/com_templates/src/Model/TemplateModel.php
+++ b/administrator/components/com_templates/src/Model/TemplateModel.php
@@ -693,7 +693,7 @@ public function copy()
             // Delete new folder if it exists
             $toPath = $this->getState('to_path');
 
-            if (Folder::exists($toPath)) {
+            if (is_dir(Path::clean($toPath))) {
                 if (!Folder::delete($toPath)) {
                     $app->enqueueMessage(Text::_('COM_TEMPLATES_ERROR_COULD_NOT_WRITE'), 'error');
 
@@ -1145,7 +1145,7 @@ public function createOverride($override)
             }
 
             // Check Html folder, create if not exist
-            if (!Folder::exists($htmlPath) && !Folder::create($htmlPath)) {
+            if (!is_dir(Path::clean($htmlPath)) && !Folder::create($htmlPath)) {
                 $app->enqueueMessage(Text::_('COM_TEMPLATES_FOLDER_ERROR'), 'error');
 
                 return false;
@@ -1203,7 +1203,7 @@ public function createTemplateOverride($overridePath, $htmlPath)
             foreach ($folders as $folder) {
                 $htmlFolder = $htmlPath . str_replace($overridePath, '', $folder);
 
-                if (!Folder::exists($htmlFolder)) {
+                if (!is_dir(Path::clean($htmlFolder))) {
                     Folder::create($htmlFolder);
                 }
             }
@@ -1864,7 +1864,7 @@ public function child()
         // Delete new folder if it exists
         $toPath = $this->getState('to_path');
 
-        if (Folder::exists($toPath)) {
+        if (is_dir(Path::clean($toPath))) {
             if (!Folder::delete($toPath)) {
                 $app->enqueueMessage(Text::_('COM_TEMPLATES_ERROR_COULD_NOT_WRITE'), 'error');
 
diff --git a/libraries/src/Form/Field/ChromestyleField.php b/libraries/src/Form/Field/ChromestyleField.php
index 8a874191fd61b..f6901508580b4 100644
--- a/libraries/src/Form/Field/ChromestyleField.php
+++ b/libraries/src/Form/Field/ChromestyleField.php
@@ -15,6 +15,7 @@
 use Joomla\CMS\HTML\HTMLHelper;
 use Joomla\CMS\Language\Text;
 use Joomla\Database\ParameterType;
+use Joomla\Filesystem\Path;
 
 // phpcs:disable PSR1.Files.SideEffects
 \defined('_JEXEC') or die;
@@ -189,7 +190,7 @@ protected function getTemplateModuleStyles()
         foreach ($templates as $template) {
             $chromeLayoutPath = $path . '/templates/' . $template->element . '/html/layouts/chromes';
 
-            if (!Folder::exists($chromeLayoutPath)) {
+            if (!is_dir(Path::clean($chromeLayoutPath))) {
                 continue;
             }
 
diff --git a/libraries/src/Form/Rule/FolderPathExistsRule.php b/libraries/src/Form/Rule/FolderPathExistsRule.php
index 9418439971757..5837604b0dacf 100644
--- a/libraries/src/Form/Rule/FolderPathExistsRule.php
+++ b/libraries/src/Form/Rule/FolderPathExistsRule.php
@@ -9,7 +9,6 @@
 
 namespace Joomla\CMS\Form\Rule;
 
-use Joomla\CMS\Filesystem\Folder;
 use Joomla\CMS\Form\Form;
 use Joomla\Filesystem\Path;
 use Joomla\Registry\Registry;
@@ -64,6 +63,6 @@ public function test(\SimpleXMLElement $element, $value, $group = null, Registry
             return false;
         }
 
-        return Folder::exists($pathCleaned);
+        return is_dir(Path::clean($pathCleaned));
     }
 }
diff --git a/libraries/src/Installer/Adapter/FileAdapter.php b/libraries/src/Installer/Adapter/FileAdapter.php
index 3f122feedc493..92eccd665555e 100644
--- a/libraries/src/Installer/Adapter/FileAdapter.php
+++ b/libraries/src/Installer/Adapter/FileAdapter.php
@@ -79,7 +79,7 @@ protected function copyBaseFiles()
 
         // Now that we have folder list, lets start creating them
         foreach ($this->folderList as $folder) {
-            if (!Folder::exists($folder)) {
+            if (!is_dir(Path::clean($folder))) {
                 if (!$created = Folder::create($folder)) {
                     throw new \RuntimeException(
                         Text::sprintf('JLIB_INSTALLER_ABORT_FILE_INSTALL_FAIL_SOURCE_DIRECTORY', $folder)
@@ -308,7 +308,7 @@ protected function removeExtensionFiles()
         // Lastly, remove the extension_root
         $folder = $this->parent->getPath('extension_root');
 
-        if (Folder::exists($folder)) {
+        if (is_dir(Path::clean($folder))) {
             Folder::delete($folder);
         }
 
@@ -515,7 +515,7 @@ protected function populateFilesAndFolderList()
                 $folderName .= '/' . $dir;
 
                 // Check if folder exists, if not then add to the array for folder creation
-                if (!Folder::exists($folderName)) {
+                if (!is_dir(Path::clean($folderName))) {
                     $this->folderList[] = $folderName;
                 }
             }
@@ -525,7 +525,7 @@ protected function populateFilesAndFolderList()
             $targetFolder = empty($target) ? $jRootPath : $jRootPath . '/' . $target;
 
             // Check if source folder exists
-            if (!Folder::exists($sourceFolder)) {
+            if (!is_dir(Path::clean($sourceFolder))) {
                 Log::add(Text::sprintf('JLIB_INSTALLER_ABORT_FILE_INSTALL_FAIL_SOURCE_DIRECTORY', $sourceFolder), Log::WARNING, 'jerror');
 
                 // If installation fails, rollback
diff --git a/libraries/src/Installer/Adapter/LanguageAdapter.php b/libraries/src/Installer/Adapter/LanguageAdapter.php
index 9564ff7f9036d..347f5a00b51d5 100644
--- a/libraries/src/Installer/Adapter/LanguageAdapter.php
+++ b/libraries/src/Installer/Adapter/LanguageAdapter.php
@@ -23,6 +23,7 @@
 use Joomla\CMS\Table\Table;
 use Joomla\CMS\Table\Update;
 use Joomla\Database\ParameterType;
+use Joomla\Filesystem\Path;
 use Joomla\Registry\Registry;
 
 // phpcs:disable PSR1.Files.SideEffects
@@ -201,7 +202,7 @@ protected function setupUninstall()
         $this->parent->setPath('source', $path);
 
         // Check it exists
-        if (!Folder::exists($path)) {
+        if (!is_dir(Path::clean($path))) {
             // If the folder doesn't exist lets just nuke the row as well and presume the user killed it for us
             $this->extension->delete();
 
diff --git a/libraries/src/Installer/Adapter/LibraryAdapter.php b/libraries/src/Installer/Adapter/LibraryAdapter.php
index f3eeacb7518d6..ffbdaf64a9c3f 100644
--- a/libraries/src/Installer/Adapter/LibraryAdapter.php
+++ b/libraries/src/Installer/Adapter/LibraryAdapter.php
@@ -19,6 +19,7 @@
 use Joomla\CMS\Table\Update;
 use Joomla\Database\ParameterType;
 use Joomla\Filesystem\File;
+use Joomla\Filesystem\Path;
 
 // phpcs:disable PSR1.Files.SideEffects
 \defined('_JEXEC') or die;
@@ -282,7 +283,7 @@ protected function removeExtensionFiles()
 
         // @todo: Change this so it walked up the path backwards so we clobber multiple empties
         // If the folder is empty, let's delete it
-        if (Folder::exists($this->parent->getPath('extension_root'))) {
+        if (is_dir(Path::clean($this->parent->getPath('extension_root')))) {
             if (is_dir($this->parent->getPath('extension_root'))) {
                 $files = Folder::files($this->parent->getPath('extension_root'));
 
diff --git a/libraries/src/Installer/Adapter/PackageAdapter.php b/libraries/src/Installer/Adapter/PackageAdapter.php
index eb7875212dd89..a2a851158f44e 100644
--- a/libraries/src/Installer/Adapter/PackageAdapter.php
+++ b/libraries/src/Installer/Adapter/PackageAdapter.php
@@ -25,6 +25,7 @@
 use Joomla\Database\ParameterType;
 use Joomla\Event\Event;
 use Joomla\Filesystem\File;
+use Joomla\Filesystem\Path;
 
 // phpcs:disable PSR1.Files.SideEffects
 \defined('_JEXEC') or die;
@@ -336,7 +337,7 @@ protected function finaliseUninstall(): bool
 
         $folder = $this->parent->getPath('extension_root');
 
-        if (Folder::exists($folder)) {
+        if (is_dir(Path::clean($folder))) {
             Folder::delete($folder);
         }
 
diff --git a/libraries/src/Installer/Adapter/TemplateAdapter.php b/libraries/src/Installer/Adapter/TemplateAdapter.php
index 7b768f4bdb20d..2f3f1d7ed2a3b 100644
--- a/libraries/src/Installer/Adapter/TemplateAdapter.php
+++ b/libraries/src/Installer/Adapter/TemplateAdapter.php
@@ -19,6 +19,7 @@
 use Joomla\CMS\Table\Table;
 use Joomla\CMS\Table\Update;
 use Joomla\Database\ParameterType;
+use Joomla\Filesystem\Path;
 
 // phpcs:disable PSR1.Files.SideEffects
 \defined('_JEXEC') or die;
@@ -392,7 +393,7 @@ protected function removeExtensionFiles()
         $this->parent->removeFiles($this->getManifest()->languages, $this->extension->client_id);
 
         // Delete the template directory
-        if (Folder::exists($this->parent->getPath('extension_root'))) {
+        if (is_dir(Path::clean($this->parent->getPath('extension_root')))) {
             Folder::delete($this->parent->getPath('extension_root'));
         } else {
             Log::add(Text::_('JLIB_INSTALLER_ERROR_TPL_UNINSTALL_TEMPLATE_DIRECTORY'), Log::WARNING, 'jerror');
diff --git a/libraries/src/Installer/Installer.php b/libraries/src/Installer/Installer.php
index fdc98c9f102a2..094dd7a31d74a 100644
--- a/libraries/src/Installer/Installer.php
+++ b/libraries/src/Installer/Installer.php
@@ -614,7 +614,7 @@ public function abort($msg = null, $type = null)
      */
     public function install($path = null)
     {
-        if ($path && Folder::exists($path)) {
+        if ($path && is_dir(Path::clean($path))) {
             $this->setPath('source', $path);
         } else {
             $this->abort(Text::_('JLIB_INSTALLER_ABORT_NOINSTALLPATH'));
@@ -803,7 +803,7 @@ public function discover()
      */
     public function update($path = null)
     {
-        if ($path && Folder::exists($path)) {
+        if ($path && is_dir(Path::clean($path))) {
             $this->setPath('source', $path);
         } else {
             $this->abort(Text::_('JLIB_INSTALLER_ABORT_NOUPDATEPATH'));
@@ -1579,7 +1579,7 @@ public function parseLanguages(\SimpleXMLElement $element, $cid = 0)
                 }
 
                 // If the language folder is not present, then the core pack hasn't been installed... ignore
-                if (!Folder::exists(\dirname($path['dest']))) {
+                if (!is_dir(Path::clean(\dirname($path['dest'])))) {
                     continue;
                 }
             } else {
@@ -1947,7 +1947,7 @@ public function removeFiles($element, $cid = 0)
                 }
 
                 // If the language folder is not present, then the core pack hasn't been installed... ignore
-                if (!Folder::exists(\dirname($path))) {
+                if (!is_dir(Path::clean(\dirname($path)))) {
                     continue;
                 }
             } else {
@@ -2012,7 +2012,7 @@ public function copyManifest($cid = 1)
     public function findManifest()
     {
         // Do nothing if folder does not exist for some reason
-        if (!Folder::exists($this->getPath('source'))) {
+        if (!is_dir(Path::clean($this->getPath('source')))) {
             return false;
         }
 
diff --git a/libraries/src/Installer/InstallerHelper.php b/libraries/src/Installer/InstallerHelper.php
index 56e0245e03977..d3624541bb2f7 100644
--- a/libraries/src/Installer/InstallerHelper.php
+++ b/libraries/src/Installer/InstallerHelper.php
@@ -208,7 +208,7 @@ public static function unpack($packageFilename, $alwaysReturnArray = false)
         $dirList = array_merge((array) Folder::files($extractdir, ''), (array) Folder::folders($extractdir, ''));
 
         if (\count($dirList) === 1) {
-            if (Folder::exists($extractdir . '/' . $dirList[0])) {
+            if (is_dir(Path::clean($extractdir . '/' . $dirList[0]))) {
                 $extractdir = Path::clean($extractdir . '/' . $dirList[0]);
             }
         }
diff --git a/libraries/src/Installer/InstallerScript.php b/libraries/src/Installer/InstallerScript.php
index 28da7035a4f52..22e71a6027e45 100644
--- a/libraries/src/Installer/InstallerScript.php
+++ b/libraries/src/Installer/InstallerScript.php
@@ -325,7 +325,7 @@ public function removeFiles()
 
         if (!empty($this->deleteFolders)) {
             foreach ($this->deleteFolders as $folder) {
-                if (Folder::exists(JPATH_ROOT . $folder) && !Folder::delete(JPATH_ROOT . $folder)) {
+                if (is_dir(Path::clean(JPATH_ROOT . $folder)) && !Folder::delete(JPATH_ROOT . $folder)) {
                     echo Text::sprintf('JLIB_INSTALLER_ERROR_FILE_FOLDER', $folder) . '<br>';
                 }
             }
diff --git a/plugins/editors/tinymce/src/PluginTraits/DisplayTrait.php b/plugins/editors/tinymce/src/PluginTraits/DisplayTrait.php
index 6359531624349..61c290665f384 100644
--- a/plugins/editors/tinymce/src/PluginTraits/DisplayTrait.php
+++ b/plugins/editors/tinymce/src/PluginTraits/DisplayTrait.php
@@ -10,7 +10,6 @@
 
 namespace Joomla\Plugin\Editors\TinyMCE\PluginTraits;
 
-use Joomla\CMS\Filesystem\Folder;
 use Joomla\CMS\Filter\InputFilter;
 use Joomla\CMS\Language\Text;
 use Joomla\CMS\Layout\LayoutHelper;
@@ -178,8 +177,8 @@ public function display(string $name, string $content = '', array $attributes =
         $skinDark = $levelParams->get($app->isClient('administrator') ? 'skin_admin_dark' : 'skin_dark', 'oxide-dark');
 
         // Check that selected skin exists.
-        $skin     = Folder::exists(JPATH_ROOT . '/media/vendor/tinymce/skins/ui/' . $skin) ? $skin : 'oxide';
-        $skinDark = Folder::exists(JPATH_ROOT . '/media/vendor/tinymce/skins/ui/' . $skinDark) ? $skinDark : 'oxide-dark';
+        $skin     = is_dir(JPATH_ROOT . '/media/vendor/tinymce/skins/ui/' . $skin) ? $skin : 'oxide';
+        $skinDark = is_dir(JPATH_ROOT . '/media/vendor/tinymce/skins/ui/' . $skinDark) ? $skinDark : 'oxide-dark';
 
         if (!$levelParams->get('lang_mode', 1)) {
             // Admin selected language
diff --git a/plugins/filesystem/local/src/Adapter/LocalAdapter.php b/plugins/filesystem/local/src/Adapter/LocalAdapter.php
index c2a30d9481221..fa0e56813b51d 100644
--- a/plugins/filesystem/local/src/Adapter/LocalAdapter.php
+++ b/plugins/filesystem/local/src/Adapter/LocalAdapter.php
@@ -333,7 +333,7 @@ public function delete(string $path)
 
             $success = File::delete($localPath);
         } else {
-            if (!Folder::exists($localPath)) {
+            if (!is_dir(Path::clean($localPath))) {
                 throw new FileNotFoundException();
             }
 
diff --git a/plugins/system/languagefilter/src/Extension/LanguageFilter.php b/plugins/system/languagefilter/src/Extension/LanguageFilter.php
index 826a01543c81e..e925e411abab8 100644
--- a/plugins/system/languagefilter/src/Extension/LanguageFilter.php
+++ b/plugins/system/languagefilter/src/Extension/LanguageFilter.php
@@ -15,7 +15,6 @@
 use Joomla\CMS\Association\AssociationServiceInterface;
 use Joomla\CMS\Component\ComponentHelper;
 use Joomla\CMS\Factory;
-use Joomla\CMS\Filesystem\Folder;
 use Joomla\CMS\Language\Associations;
 use Joomla\CMS\Language\LanguageFactoryInterface;
 use Joomla\CMS\Language\LanguageHelper;
@@ -606,7 +605,7 @@ public function onUserLogin($user, $options = [])
                 if (
                     !\array_key_exists($lang_code, $this->lang_codes)
                     || !\array_key_exists($lang_code, Multilanguage::getSiteHomePages())
-                    || !Folder::exists(JPATH_SITE . '/language/' . $lang_code)
+                    || !is_dir(JPATH_SITE . '/language/' . $lang_code)
                 ) {
                     $lang_code = $this->current_lang;
                 }