I'm having trouble signing in to MS Lync 2010 client. I have two laptops and need to have the same user credentials log into both, but never simultaneously. One of the laptops logs in flawlessly; the other attempts to log in and just says "Contacting server and signing in" forever. Both laptops are signing in from the same network switch in our building, same network; and both laptops are the same make / model running Windows 7 Pro. I can't understand what the problem is! I have tried copying two certicates over from the working laptop (one in Credentials Manager and the other in certmgr) but this makes no difference. I have also uninstalled the Lync client, removed the "Communicator" folder, and removed two registry entires related to Lync; then reinstalled, and no different. The Microsoft Lync remote connection analyzer test is a success. Any help?
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Jump to PostContacting server and signing in
Are both laptops using the same DNS? Usually, Link servers are identified by the DNS Helper records for SIP. Lync Servers are 'found' on the network with these special DNS records. Usually, sip.mycompany.com will resolve to a lync server to service …
Jump to PostCheck your firewall logs for blocked packets. that should be easy to do if you have the source and destination IP information.
Jump to PostWell, I've managed a firewall team for several years, some time ago and my experience has been that there is always a possibility that the firewall rule that's in place for this service is only including certain source IPs. Your rule may not include the other computers IP. It's a …
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