Environment: Exchange Server 2010 SP2 Rollup v4, Lync Server 2010 (using it for IM and presence only)
We recently received Office 2013 Professional Plus from our volume license site. When using the Lync 2013 client included in the Office 2013 install, users get "outlook integration errors." If we go back to the Lync 2010 client, the problem goes away.
If I look at the configuration information for the 2013 client by holding down Ctrl and right clicking on the taskbar icon I get:
MAPI Information: Mapi status OK
EWS Information: EWS unavailable, retrying connection
However, when using the 2010 client, I get:
Mapi Information: MAPI status OK
EWS Information: EWS Status OK
I have tried everything I could think of to fix this problem, to no avail. Weird thing is it happens on multiple machines, it just not a single machine with this problem, it's all of them.
I have tried:
1. Recreating Outlook profile
2. Repairing office
3. Completely uninstalling office, and reinstalling
4. Wiping out a laptop and doing a fresh install of Windows 8 and Office 2013 (this surprised me the problem was still there, and realized it wasn't a client or local registry issue)
5. Cleared out the Autodiscovery information in the registry. It does recreate it with the correct value
6. Moved the Exchange mailbox to a differnet database (sometimes this can reset things on the Exchange side for a mailbox)
7. Removed account from Lync, and readded it.
Right now, the only thing we can do is stay with the Lync 2010 client in conjunction with using Outlook 2013. What could possibly be causing this issue where EWS is working in the 2010 client, but not the 2013 client?
The /cleanfreebusy switch doesn't' exist in Outlook 2013, so I couldn't try that like the Microsoft KB article suggested. It hasn't been updated to deal with Lync 2013 clients with this issue anyway.