Hi Imre,
Thank you for the reply.
I would suggest you to try the steps in the link and check if it helps.
http://blogs.msdn.com/b/notime/archive/2013/10/21/10458031.aspx
Note: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base.
Hope this information helps. Reply to the post with updated status of the issue to assist you further.