Microsoft Lync 2010 Client – Cannot sign in because the server version is incompatible

I am using Lync 2010 to access an Office Communications Server 2007 server and received the above error. In general Greg Olsen’s blog post helped me, but my registry entry was slightly different. Might be a configuration thing with the environment we have here…

Instead of:
HKEY_CURRENT_USER > Software > Policies > Microsoft > Communicator

I had to use:
HKU > S-1-5-21-[more long code here] > Software > Policies > Microsoft > Communicator

I discovered this by using the Windows Process Monitor and tracking what registry key it was looking for. A quick search for DisableServerCheck in the monitor found the appropriate key.

HTH

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This entry was posted on October 19, 2011 at 5:31 pm and is filed under Lync 2010. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

2 Responses to “Microsoft Lync 2010 Client – Cannot sign in because the server version is incompatible”

Sorin Sanduorin Says:
October 19, 2011 at 8:49 pm | Reply
Hi
What are the benefits for using Lync client instead of Communicator using OCs 2007.
Thank’s
- gavinmckay Says:
  October 31, 2011 at 9:38 am | Reply
  Hi Sorin,
  
  Main changes are UI and integration with Office 2010. The best list is on technet as it has all the new features.
  
  HTH