diff --git a/Neos.Neos/Classes/Service/UserService.php b/Neos.Neos/Classes/Service/UserService.php
index 5326ad93220..ff18f261fa1 100644
--- a/Neos.Neos/Classes/Service/UserService.php
+++ b/Neos.Neos/Classes/Service/UserService.php
@@ -59,6 +59,18 @@ public function getBackendUser()
         return $this->userDomainService->getCurrentUser();
     }
 
+    /**
+     * 8.3 behaviour: Returns the name of the currently logged in user's personal workspace
+     * (even if that might not exist at that time).
+     * If no user is logged in this method returns null.
+     *
+     * @deprecated and not implemented with Neos 9.0 - can be removed any time, just for the 8.3 upgrade phase
+     */
+    public function getPersonalWorkspaceName(): ?string
+    {
+        throw new \LogicException('`userInformation.personalWorkspaceName` was removed in Neos 9.0 see https://github.com/neos/neos-development-collection/pull/5418');
+    }
+
     /**
      * Returns the stored preferences of a user
      *
diff --git a/Neos.Neos/Configuration/Policy.yaml b/Neos.Neos/Configuration/Policy.yaml
index d8b19e088c9..1267021d09b 100644
--- a/Neos.Neos/Configuration/Policy.yaml
+++ b/Neos.Neos/Configuration/Policy.yaml
@@ -43,10 +43,6 @@ privilegeTargets:
       label: Access to content service APIs
       matcher: 'method(Neos\Neos\Controller\Backend\SchemaController->(nodeTypeSchema)Action()) || method(Neos\Neos\Controller\Backend\SettingsController->editPreviewAction())'
 
-    'Neos.Neos:Backend.PersonalWorkspaceReadAccess.NodeConverter':
-      label: Access to own personal workspace
-      matcher: 'method(Neos\Neos\TypeConverter\NodeConverter->prepareContextProperties(workspaceName === current.userInformation.personalWorkspaceName))'
-
     'Neos.Neos:Backend.EditContent':
       label: General access to content editing
       matcher: 'method(Neos\Neos\Service\Controller\NodeController->(show|getPrimaryChildNode|getChildNodesForTree|filterChildNodesForTree|getChildNodes|getChildNodesFromParent|create|createAndRender|createNodeForTheTree|move|moveBefore|moveAfter|moveInto|moveAndRender|copy|copyBefore|copyAfter|copyInto|copyAndRender|update|updateAndRender|delete|searchPage|error)Action()) || method(Neos\Neos\Controller\Backend\ContentController->(uploadAsset|assetsWithMetadata|imageWithMetadata|createImageVariant|error)Action()) || method(Neos\Neos\Controller\Service\AssetProxiesController->(index|show|import|error)Action()) || method(Neos\Neos\Controller\Service\AssetsController->(index|show|error)Action()) || method(Neos\Neos\Controller\Service\NodesController->(index|show|create|error)Action())'
@@ -169,10 +165,6 @@ roles:
         privilegeTarget: 'Neos.Neos:ContentPreview'
         permission: GRANT
 
-      -
-        privilegeTarget: 'Neos.Neos:Backend.PersonalWorkspaceReadAccess.NodeConverter'
-        permission: GRANT
-
       -
         privilegeTarget: 'Neos.Neos:Backend.EditContent'
         permission: GRANT