Hello

slowing moving a new company into our environment. first we are giving them our primary smtp addresses to use in their domain. with their own exchange servers for now. MY smtp is abc.com. once they change their primary smtp their OCS 2007 R2 client prompts for credentials.

I thought there was an regkey to disable autodisover just for OCS?

thanks

Hi,

For Lync 2010, you can try the following steps to test in an affected machine using Lync Client 2010:

From a command prompt execute with admin rights:

HKCU\Software\Microsoft\Communicator /v TrustModelData /t REG_EXPAND_SZ /d "a.com,b.com", empty the value.

Reboot the machine and test.

For OCS 2007, you can check if the similar value in registry exist, if yes, try to change it and then test agin.

Best Regards,
Eason Huang

still get the prompt for username and password under lync and ocs clients