diff --git a/csharp/App/Backend/DataTypes/Methods/Folder.cs b/csharp/App/Backend/DataTypes/Methods/Folder.cs
index b6543e53e..404410997 100644
--- a/csharp/App/Backend/DataTypes/Methods/Folder.cs
+++ b/csharp/App/Backend/DataTypes/Methods/Folder.cs
@@ -74,7 +74,7 @@ public static class FolderMethods
     
     public static Boolean IsRelativeRoot(this Folder folder)
     { 
-        return folder.ParentId < 0; // root has ParentId 0 by definition
+        return folder.ParentId < 0; 
     }
 
     public static Boolean WasMoved(this Folder folder)
diff --git a/csharp/App/Backend/DataTypes/Methods/User.cs b/csharp/App/Backend/DataTypes/Methods/User.cs
index 83905a911..f0d2c347f 100644
--- a/csharp/App/Backend/DataTypes/Methods/User.cs
+++ b/csharp/App/Backend/DataTypes/Methods/User.cs
@@ -27,7 +27,7 @@ public static class UserMethods
     {
         return user
               .DirectlyAccessibleFolders()
-              .SelectMany(f => f.DescendantFolders())
+              .SelectMany(f => f.DescendantFolders().Prepend(f))
               .Distinct();
 
         // Distinct because the user might have direct access
@@ -51,7 +51,7 @@ public static class UserMethods
               .Select(r => r.InstallationId)
               .Select(Db.GetInstallationById)
               .NotNull()
-              .Do(i => i.ParentId = -1); // hide inaccessible parents from calling user
+              .Do(i => i.ParentId = 0); // hide inaccessible parents from calling user
     }
 
     public static IEnumerable<Folder> DirectlyAccessibleFolders(this User user)
@@ -62,7 +62,7 @@ public static class UserMethods
               .Select(r => r.FolderId)
               .Select(Db.GetFolderById)
               .NotNull()
-              .Do(i => i.ParentId = -1); // hide inaccessible parents from calling user;
+              .Do(i => i.ParentId = 0); // hide inaccessible parents from calling user;
     }
 
     public static IEnumerable<User> ChildUsers(this User parent)
@@ -172,6 +172,12 @@ public static class UserMethods
               .Ancestors()
               .Contains(user);
     }
+    
+    public static Boolean IsRelativeRoot(this User user,  Installation i)
+    { 
+        // TODO: determine not by id but by accessibility
+        return i.ParentId < 0; 
+    }
 
     public static String Salt(this User user)
     {