diff --git a/src/Umbraco.Web/Editors/MediaController.cs b/src/Umbraco.Web/Editors/MediaController.cs
index 3ca4195a26..ee6b175355 100644
--- a/src/Umbraco.Web/Editors/MediaController.cs
+++ b/src/Umbraco.Web/Editors/MediaController.cs
@@ -413,7 +413,69 @@ namespace Umbraco.Web.Editors
             }
 
             return Request.CreateResponse(HttpStatusCode.OK);
-        }
+        }
+
+        /// <summary>
+        /// Given a parent id which could be a GUID, UDI or an INT, this will resolve the INT
+        /// </summary>
+        /// <param name="parentId"></param>
+        /// <param name="validatePermissions">
+        /// If true, this will check if the current user has access to the resolved integer parent id
+        /// and if that check fails an unauthorized exception will occur
+        /// </param>
+        /// <returns></returns>
+        private int GetParentIdAsInt(string parentId, bool validatePermissions)
+        {
+            int intParentId;
+            GuidUdi parentUdi;
+
+            // test for udi
+            if (GuidUdi.TryParse(parentId, out parentUdi))
+            {
+                parentId = parentUdi.Guid.ToString();
+            }
+
+            //if it's not an INT then we'll check for GUID
+            if (int.TryParse(parentId, out intParentId) == false)
+            {
+                // if a guid then try to look up the entity
+                Guid idGuid;
+                if (Guid.TryParse(parentId, out idGuid))
+                {
+                    var entity = Services.EntityService.GetByKey(idGuid);
+                    if (entity != null)
+                    {
+                        intParentId = entity.Id;
+                    }
+                    else
+                    {
+                        throw new EntityNotFoundException(parentId, "The passed id doesn't exist");
+                    }
+                }
+                else
+                {
+                    throw new HttpResponseException(
+                        Request.CreateValidationErrorResponse("The request was not formatted correctly, the parentId is not an integer, Guid or UDI"));
+                }
+            }
+
+            //ensure the user has access to this folder by parent id!
+            if (CheckPermissions(
+                    new Dictionary<string, object>(),
+                    Security.CurrentUser,
+                    Services.MediaService,
+                    intParentId) == false)
+            {
+                throw new HttpResponseException(Request.CreateResponse(
+                    HttpStatusCode.Forbidden,
+                    new SimpleNotificationModel(new Notification(
+                        Services.TextService.Localize("speechBubbles/operationFailedHeader"),
+                        Services.TextService.Localize("speechBubbles/invalidUserPermissionsText"),
+                        SpeechBubbleIcon.Warning))));
+            }
+
+            return intParentId;
+        }
 
         /// <summary>
         /// Change the sort order for media
@@ -574,11 +636,13 @@ namespace Umbraco.Web.Editors
             }
         }
 
-        [EnsureUserPermissionForMedia("folder.ParentId")]
-        public MediaItemDisplay PostAddFolder(EntityBasic folder)
+        public MediaItemDisplay PostAddFolder(PostedFolder folder)
         {
-            var mediaService = ApplicationContext.Services.MediaService;
-            var f = mediaService.CreateMedia(folder.Name, folder.ParentId, Constants.Conventions.MediaTypes.Folder);
+            var intParentId = GetParentIdAsInt(folder.ParentId, validatePermissions: true);
+
+            var mediaService = ApplicationContext.Services.MediaService;
+
+            var f = mediaService.CreateMedia(folder.Name, intParentId, Constants.Conventions.MediaTypes.Folder);
             mediaService.Save(f, Security.CurrentUser.Id);
 
             return Mapper.Map<IMedia, MediaItemDisplay>(f);
@@ -649,21 +713,6 @@ namespace Umbraco.Web.Editors
                 }
             }
 
-
-            //ensure the user has access to this folder by parent id!
-            if (CheckPermissions(
-               new Dictionary<string, object>(),
-               Security.CurrentUser,
-               Services.MediaService, parentId) == false)
-            {
-                return Request.CreateResponse(
-                    HttpStatusCode.Forbidden,
-                    new SimpleNotificationModel(new Notification(
-                        Services.TextService.Localize("speechBubbles/operationFailedHeader"),
-                        Services.TextService.Localize("speechBubbles/invalidUserPermissionsText"),
-                        SpeechBubbleIcon.Warning)));
-            }
-
             var tempFiles = new PostedFiles();
             var mediaService = ApplicationContext.Services.MediaService;
 
@@ -793,8 +842,8 @@ namespace Umbraco.Web.Editors
                 if (origin.Value == "blueimp")
                 {
                     return Request.CreateResponse(HttpStatusCode.OK,
-                        tempFiles,
-                        //Don't output the angular xsrf stuff, blue imp doesn't like that
+                        tempFiles,
+                        //Don't output the angular xsrf stuff, blue imp doesn't like that
                         new JsonMediaTypeFormatter());
                 }
             }
diff --git a/src/Umbraco.Web/Models/ContentEditing/PostedFolder.cs b/src/Umbraco.Web/Models/ContentEditing/PostedFolder.cs
new file mode 100644
index 0000000000..35cd908787
--- /dev/null
+++ b/src/Umbraco.Web/Models/ContentEditing/PostedFolder.cs
@@ -0,0 +1,17 @@
+using System.Runtime.Serialization;
+
+namespace Umbraco.Web.Models.ContentEditing
+{
+    /// <summary>
+    /// Used to create a folder with the MediaController
+    /// </summary>
+    [DataContract]
+    public class PostedFolder
+    {
+        [DataMember(Name = "parentId")]
+        public string ParentId { get; set; }
+
+        [DataMember(Name = "name")]
+        public string Name { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/src/Umbraco.Web/Umbraco.Web.csproj b/src/Umbraco.Web/Umbraco.Web.csproj
index 16059f4e12..6b38bf6901 100644
--- a/src/Umbraco.Web/Umbraco.Web.csproj
+++ b/src/Umbraco.Web/Umbraco.Web.csproj
@@ -361,6 +361,7 @@
     <Compile Include="Models\ContentEditing\MemberTypeDisplay.cs" />
     <Compile Include="Models\ContentEditing\MemberTypeSave.cs" />
     <Compile Include="Models\ContentEditing\PostedFiles.cs" />
+    <Compile Include="Models\ContentEditing\PostedFolder.cs" />
     <Compile Include="Models\ContentEditing\PropertyGroupBasic.cs" />
     <Compile Include="Models\ContentEditing\PropertyTypeBasic.cs" />
     <Compile Include="Models\ContentEditing\SimpleNotificationModel.cs" />