Issue Joining Live Meeting Meetings on Lync Server 2010

Update 1/30/13 – Lync Server 2010: January 2013 Cumulative Updates have been released which fixes this issue. You can download the latest updates here: I ran into this issue at a customer the other day.  They are in the process of migrating from OCS 2007 R2 to Lync Server 2010.  They discovered that after…


Issue with OAuth Certificate & Installing Multiple Lync Server 2013 Servers at the Same Time

I’ve run into this issue a couple times when deploying Lync Server 2013 in my lab and at customer sites.  Topology Builder makes it very easy to deploy your Lync servers quickly, but in Lync Server 2013, there’s one gotcha you need to be aware of when initially deploying multiple Lync Server 2013 servers at…


Lync Basic 2013 vs Lync 2013

With the release of Lync Server 2013, there are two versions of the Lync 2013 client available: Lync Basic 2013 Lync 2013 What’s the difference between the two? Lync Basic 2013 provides all the basic functionality that’s available in the full version of Lync (Lync 2013). However, if you want to use any of the…


OAuth Certifcate in Lync Server 2013

When requesting certificates in your Lync Server 2013 environment, you will notice that there is a new certificate type that needs to be requested, OAuthTokenIssuer.  What is OAuth and what do we use it for in Lync Server 2013? OAuth (Open Authorization) is a protocol for server-to-server authentication and authorization.  With OAuth, user credentials and passwords…


Office Web Apps Server & Lync Server 2013

Update 4/8/14 – Updated prerequisites for Windows Server 2008 R2.Update 1/12/13 – Updated with additional information.Update 11/10/13 – Updated with links to updates for Office Web Apps Server.Update 3/18/13 – Updated for RTM of Lync Server 2013.Update 11/14/12 – Updated for RTM of Office Web Apps Server. The Office Web Apps Server is a required role…


Backup Registrar Functionality in Lync Server 2013

Backup registrar functionality works in Lync Server 2013 the same way that it did in Lync Server 2010.  This means that the client is informed of it’s backup registrar via a SIP/2.0 301 Redirect request to Home Server.  This response will contain the user’s primary registrar and their backup registrar: Contact: <;transport=TLS>;q=0.7Contact: <;transport=TLS>;q=0.3 The backup registrar…


Configuring Backup Pool when the Primary Pool is Hosting the Central Management Store

I was testing out the new paired pool functionality in Lync Server 2013 in my lab when I ran into an interesting issue.  You can find more information about paired pools in the Planning for Front End Pool Pairing TechNet article.  After selecting the backup pool for my primary pool in Topology Builder, when I…


Issue when Installing Windows Identity Foundation on Windows Server 2012

I was installing Lync Server 2013 Preview in my lab and while running Step 1 from the Deployment Wizard I got the following message: I found the Additional Software Requirements TechNet article ( that lists the additional software that needs to be installed with Lync.  I found Windows Identity Foundation and the link in the…


Where is the Lync 2013 Tracing Folder?

I went to look for the client uccapilog file, but it wasn’t in the location I was expecting.  In previous versions of Communicator and Lync 2010, the client tracing folder was stored in: C:\Users\<username>\Tracing In Lync 2013, the client tracing folder in now stored in the following location: C:\Users\<username>\AppData\Local\Microsoft\Office\15.0\Lync\Tracing