KB931125 broke Lync CMS replication and conferencing

After applying KB931125 CMS replication and conferencing broke. Apparently that pushed us over the maximum size of the trusted certifcate authorities list that the Schannel security package supports (12,228 bytes). It was resolved by creating a registry key on all of the Lync servers and restarting IIS (iisreset /restart): [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL] “SendTrustedIssuerList”=dword:00000000   Thanks to Tom […]

How did I enable Call Admission Control (CAC)

For this task I wanted to enable CAC so that I could see utilization statistics as well as look into controlling bandwith for 1 site. Following are basic steps I followed to get it working. Please follow these steps at your own risk. 1. Get all of your Regions, Sites, and Subnets configured. All Subnets […]

Create RBAC Role for Account Administrators

I had a requirement to give other administrators the ability to manage the Lync users in their department.  Our departments are contained in separate OUs which lends itself to using the Lync RBAC roles. Reference Role-Based Access Control For this task I granted CSUserAdministrator rights to an administrator over a specific OU.  The CSUserAdministrator role […]

Lync 2010 licensing and enforcing it via conference policy

Following are two Conferencing Policies which will enfore the features available to either a Standard CAL or Enterprise CAL user. One issue I ran into was the Standard CAL user did not see Desktop sharing when attending a conference created by an Enterprise CAL user.  Luckily this post on Lync Server Forums helped me out.  […]

Hello world!

Hello All, My first post on blog.  The intention of this blog is to share my experiences with Lync; the practical stuff you need to know when installing and configuring Lync.  Most of my content and knowledge comes from other sources which I re-word and re-work into something that makes sense to me.  References to sources […]