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Server 2008 r2 backup error 2155348001

Last Modified: 2016-10-27
Server back is failing with error code 2155348001.

I saw a fix on several sites, including technet, to create a Timeout key in the registry with a time of 20 minutes because it is taking Backup more than 10 minutes to make the Volume Shadow Copy.  Did that; with  (key value = decimal 12000000 which the answer said = 20 minutes).  Ran a one time backup.  Still failed, but the only effect of the registry entry seems to have been for it to have taken 4 hours from triggering the job to the appearance of the error in Event Viewer.

Does anyone know the right answer?  The other answers floating around out there aren't helping.

Ron Hicks, Arlington VA
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