Backup fails and the event log states that it has failed because the Volume Shadow Copy Service operation to create a shadow copy of the volumes being backed up failed with the following error code 22155348129.
This error occurs because of SharePoint 2010 updates, in our case SharePoint 2010 service pack 1 had been applied through Windows updates. However the update process for SharePoint 2010 has changed. Now the updates have to be completed manually.
The following links give more detailed explanation:
The fix is to run the PSconfig utility.
1. From an administrative command prompt change directory to C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\BIN.
2. Run PSConfig.exe -cmd upgrade -inplace b2b -force -cmd applicationcontent -install -cmd installfeatures
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