UISuppressionMode in registry not affecting Lync Client

I am using custom C# Lync 2013 client with a sever i just recently setup. I need to develop a custom Lync Client that allows audio video conference. I found a really well explained demo here.

Looking in the code i found discovered that i had to run the Lync Client in UISuppressionMode to allow the new C# Client to view the videos. So i did some searches and found it was a key in the registry that had to be edited/created. And so i did as i found in this video. I started Lync and added the registry entry at the good place for Lync 2013.

Image of my registry Key and Value

After, it needed to be closed and restarted.

But the Client UI started, like i had not changed a thing. I have been working on this for hours without any fixes. I will post it on the Lync's forum too, wishing for the best.

UPDATE:

From MSDN :

You can set the Lync 2013 suppression mode when you install the Lync client. At the command prompt, start the Lync installation .exe with a command-line argument in the following table.

I tried using the Office install for Lync online with that command, and the arguments isn't valid.

Setup.exe /FullUisuppression

I downloaded Lync Basic client from the Windows Download center. Didn't work either.

lyncentry.exe /FullUisuppression

UPDATE 2:

I changed the Lync Client version to 2010 and the UiSuppresionMode works perfecly fine, but the demo i found uses the 2013 sdk. It can't find the LyncClient even if its running. I found another demo which uses the 2010 sdk and works fine. The documenting of 2010 is not really complete, or it might be almost the same as the 2013 sdk. I will look forward into the 2010 version but i would prefer the 2013 to be working.

Solution

Lync 2013 reads the setting for UISuppressionMode from a different registry key than Lync 2010. Since it works with 2010, but not 2013, I assume you use the wrong key. Try [HKEY_CURRENT_USER]\Software\Microsoft\Office\15.0\Lync\UISuppressionMode.