Lync 2013 Errors:
On your Lync 2013 Server you might see multiple errors logged with following event ID’s:
Here is a description of error 61037:
If you notice all 4 errors are pointing to the Frontend Service on the Lync Server. A quick check on the servers revealed that all of them had not started the Frontend Service automatically. Once the FE service is started these errors will not be logged again.
Hope it helps.