Error Message:

Cluster File Share 'name' could not be found.

Explanation:

The file share was deleted, probably with a command-line tool or another tool. The Cluster service's failure detection periodically queries the share name. When the check fails, this error happens, and the Cluster service restarts the share.

User Action:

If you don't want the share restarted, start Cluster Administrator and stop the operation. If you want the share restarted, no action is necessary.