This issue occurs when you try to join a meeting that is hosted in a domain that is not federated with your organization. 


To resolve this issue, install the following update:

2963369 Update 2963369 for Lync for Mac 2011 14.0.9

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

What affected your experience?

Thank you for your feedback!