Hi,

We are in process to migrate all servers from an old datacenter to new datacenter. We have a Lync 2010 pool in old DC and now have built another pool in same organization in new DC. Both pools have SSL certificate from different external vendors. Old pool all servers have certificate from Comodo while new pool have it from Geotrust. We started moving few pilot users from old pool to new pool. While most of them are fine but few users are complaining that now they are unable to join any meetings which were created after they moved to new pool. Also if they send any meeting invite to others, then other also unable to join that meeting. Users are getting "Service Unavailable, HTTP Error 503. The service is unavailable". Since the issue is with few users only and not with all so we can say that Simple urls are published with no issues. I don't find anything in UCCP logs. Please help. Thanks.

• Edited by SaurabhMG Tuesday, June 23, 2015 3:59 PM spelling mistake

Hello,

As i understand Meeting was created on Lync 2010 Pool and then we moved user to New Pool.

Now User who is moved to Lync 2013 Pool, they are not able to join.

What is Affected: Dial In or A/V call or Both

What i would like to know, if user hosted on Lync 2013 Pool, created Meeting, then user from Same Pool (Lync 2013), are able to Join, if Yes then try to join same meeting from one of the user from Lync 2010 Pool.

What i believe is that Conference Space Created is not being Replicated between Pool's.

By following above step we will be able to determine that and have clear vision on what we need to work on.

Regards

Durgesh Tripathy

Hi, I rectified this issue by reinstalling web services on all FE servers. Also checked that in IIS .net 4.0 was selected for Lync while it should be .net 2.0 for Lync 2010.

• Edited by SaurabhMG Thursday, July 16, 2015 3:00 PM n
• Proposed as answer by Anthony CaragolMVP Thursday, July 16, 2015 4:33 PM