() The backup has been stopped because it was halted by the client or the connection with the client failed.

Details
Product: Exchange
Event ID: 215
Source: ESE
Version: 6.5.6940.0
Component: Microsoft Exchange Extensible Storage Engine
Message: <process name> (<process id>) <instance>The backup has been stopped because it was halted by the client or the connection with the client failed.
   
Explanation

You receive the following error in the Description section of ESE Event ID 215:

The backup has been stopped because it was halted by the client or the connection with the client failed.

The most frequent cause of the error is that a 3rd party online Exchange-aware backup software program has problems.

Other known causes are a checksum mismatch (corruption) in the database, losing the connection between the backup client and the Exchange server, and manually ending the connection between the backup client and the Exchange server.

   
User Action
  1. The first step is to make sure logging of the backup software itself is enabled. Examine the logs of the backup software. Check on the web site of the backup software vendor to see if this is a known issue and if a hotfix is available. Try the backup with NT Backup. If the backup succeeds, the backup software is at fault and the issue needs to be referred to the backup software vendor.
  2. Check the application log and make sure there are no database errors and check the system log for hardware errors.
  3. Make sure that the backup software agent has not lost network connectivity to the Exchange server. If so, restart the database backup.

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