Lync Server application is not responding and is being disconnected. Application Uri '%1' Cause: This can occur if the managed ...

Lync Server application is not responding and is being disconnected.

Application Uri '%1'
Cause: This can occur if the managed application is slow to respond to messages or if the server is under heavy load or the application has become unresponsive.
Resolution:
If the server load it too heavy, consider getting a faster machine or hosting fewer users on the server.  If the application is slow, contact the author of the application.