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.

Once you find the correct location (there should already be some REG_DWORD entries in the key) you can create a new entry call DisableServerCheck of type 32-bit DWORD, then set it to the value 1. After exiting and restarting Lync 2010 client, it should log on to your existing OCS 2007 servers.

HTH

Advertisements

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

  1. Sorin Sanduorin Says:

    Hi
    What are the benefits for using Lync client instead of Communicator using OCs 2007.
    Thank’s

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


%d bloggers like this: