Lync 2013 Client, Desktop Sharing shows blank screen (Windows 7, Windows 8, Windows 8.1)

I came across this problem, where a customer reported:
A user could not participate on desktop sharing session, neither in conference nor in a p2p session. Other video related submission were working, like video or white board.
First I was guessing it could have been the video driver, but if video in Lync was working it didn't sound quite logic.

After investigating this problem, I saw a ActiveX blocking Error Message in the Eventviewer:

Microsoft Lync
CLSID: {00000000-0000-0000-0000-000000000000}
CATID: {9B179D6E-9BDB-454b-BE3D-89F9A792BD39}
The ActiveX Compatibility setting disabled loading this object to help protect your security.

15.0.4433.1506
0x80004005

This let me investigate more closer into Internet Explore. Well even there is couldn't see anything directly:

Microsoft reports several TechNet article:
http://support.microsoft.com/kb/240797/en-us
http://support.microsoft.com/kb/909738/en-us

So you need to change the ActiveX Control Settings for Lync 2013 Client:

SOLUTION:

Go and delete both registry keys. A reboot is not necessary and it will work.

In Windows 7, Windows 8 and Windows 8.1 they are hidden here:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{00000000-0000-0000-0000-000000000000}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{00000000-0000-0000-0000-000000000000}



Comments

  1. Replies
    1. HI Alex, always welcome. It was annoying well?! ;)

      Delete
  2. Replies
    1. Hi Dailibor, tnx for your feedback. much appreciated.

      Delete
  3. Thank you for this fix. This resolved my issue as well.

    ReplyDelete
  4. Perfect solution ....thanks a ton !!!

    ReplyDelete
  5. HI folks, I'm very glad that I could help you !

    ReplyDelete
  6. Great!
    It works fine but thee string sorts of re-instates itself every now and then after logging off...annoying!!

    ReplyDelete
  7. would there be more registry settings if one is using Chrome or firefox

    ReplyDelete
  8. hi , will the same changes work if we are using Chrome or Firefox . the registry changes are related only to IE browser ?

    ReplyDelete
  9. Thanks for this information.. its work perfectly

    ReplyDelete
  10. Same here! It was happening under the 2016 32-bit and it worked like a charm.

    ReplyDelete
  11. Great! Been trying to fix this freakin' problem for 2 days now by reinstalling lync. I only googled this about 30 minutes ago. Thanks!!! :)

    ReplyDelete
  12. Thanks! Worked for Windows 10 and Skype for Business 2016.

    ReplyDelete
  13. Hi All,

    If deleting the registry key don’t fix the issue please try this:

    Run PowerShell
    Copy and paste these lines:

    Set-ItemProperty -Path “HKLM:\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{00000000-0000-0000-0000-000000000000}” -Name “Compatibility Flags” -Value 8388608
    Set-ItemProperty -Path “HKLM:\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{00000000-0000-0000-0000-000000000000}” -Name “Compatibility Flags” -Value 8388608

    Please tell me if it works.

    ReplyDelete
    Replies
    1. Hi Amit,

      interesting! we would need to investigate the Value you provided. Hope I can discuss this with MSFT soon.

      Delete
    2. i cant found the key, but i did that and works, thanks!!

      Delete
    3. It worked for awhile, then the Value 800000x changes to 800400x after Windows 10 updates. If I delete the key altogether, it reappears after some time. I never know if Skype for Business will work or not, it's unreliable :(

      Delete
  14. There is no such key on both of these places, checked Win 7 and Win 10 where we have this problem. And it is occasional - sometimes works...

    ReplyDelete
    Replies
    1. Hi Bijo,
      could you send a contact request via the form on my blog please. I will have to exchange in your case some data, because this keys must be present. You als can try setting those keys manually for an initial test.

      Delete
    2. I also have the same problem AND I do NOT have these keys in registry.

      Delete
  15. I tried this and then later after a reboot, the issue came back? Is there a way to fix this and keep the registry files from coming back?

    ReplyDelete
  16. I have done this registry fix to resolve the issue but it comes back after a couple reboots. Does anyone have a permanent fix?

    ReplyDelete
    Replies
    1. This is the only fix... Maybe you can try upgrade to the SfB 2016 Client there it is solved

      Delete
  17. Thanks a lot. the solution it's working.

    ReplyDelete
  18. Just did this to fix Skype for Business shared content white screen on Windows 10 x64.

    ReplyDelete
  19. Thank you! Saved my workday :P

    ReplyDelete
  20. Both fixes work for a while but after a Windows update, the entry comes back if it was deleted or the value changes back to 00000400 and the issue comes back. So i just apply the fix again. Any ideas?

    ReplyDelete

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