The Microsoft Exchange Unified Messaging service detected a problem with the UM worker process and has requested that the ...

The Microsoft Exchange Unified Messaging service detected a problem with the UM worker process and has requested that the process be recycled. The UM worker process didn't appear to be processing queued items in the '%0'. If this problem continues, ensure that the UM worker process has read/write access to the '%0' directory or delete all '%1' files from '%0'. You may need to do both. You can disable this check via the MSExchangeUM.config file.