From time-to-time, I do come across Lync clients with this small exclamation mark in the lower right corner indicating an Exchange Connection error:
There is plenty of information and troubleshooting guides related to this problem on the Internet, but most of them deal with central problems in the Lync/Exchange topology addressing all the users housed on that topology.
I do have a small dirty trick that will help 90% of the issues where this happens on a single computer/user:
- Exit Outlook
- Exit Lync
- Start Regedit
- Navigate to and delete the following Key:
- Lync 2010:
HKEY_CURRENT_USERSoftwareMicrosoftCommunicator - Lync 2013
HKEY_CURRENT_USERSoftwareMicrosoftOffice15.0Lync - Skype for Business
HKEY_CURRENT_USERSoftwareMicrosoftOffice16.0Lync - Start Outlook and Lync
Now it’s time to grab a cup of coffee and wait 5-10 minutes for the Lync client to establish contact with your Exchange environment. You will see this in Lync Configuration Information (rightclick on Lync in System Tray):
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| Lync waiting for Exchange connection |
If you have separate mail and sip domains, it could be necessary to set the DisableEmailComparisonCheck variable:
Set-CsClientPolicy -DisableEmailComparisonCheck $true
If you still have the problem, it’s time for a deeper dive into primary SMTP addresses, Lync EWS url’s, trusted sites in Internet Explorer or maybe just call a friend 🙂
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| Searching for Regedit in Windows8 |
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| Starting Regedit from RUN in Windows7/XP |
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| Deleting corresponding Key in Regedit |
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