The Lync 2010 client for Windows Phone was released in the Windows Phone marketplace today. Being a big fan of Lync, I eagerly downloaded and ran it, only to be presented by the error :Unable to sign in. Can’t connect to the server”. I went into the manual configuration on the phone and tried to connect and still no dice.
Given that we are using Office 365, I checked in the community hub and found this post that indicated that there were were other users experiencing the same problem, but in their case, it was related to the fact that they were using the default “onmicrosoft.com” domain. However, there were some DNS instructions in the post that gave me a clue. Unfortunately, once I added the indicated DNS entry, I still had the same problem.
I decided to check the DNS settings for my domain in the Administration panel. and as it turns out, the DNS instructions have been updated since I had originally set up our Office 365. There are two CNAME entries that are required for the WP7 Lync application to work with Office 365:
| Type | Host Name | Points To | TTL |
|
CNAME |
sip.yourdomain.com |
sipdir.online.lync.com |
1 Hour |
|
CNAME |
lyncdiscover.yourdomain.com |
webdir.online.lync.com |
1 Hour |
Obviously, yourname.com should be replaced with your actual domain name.
Once I set these up, I was off to the races with my mobile Lync client.