Window Server Backup failing

Until three days ago the Windows Server Backup on my SBS2011 server was ticking along nicely and making a successful backup to a local drive but now it fails with "The backup operation that started at '¿2014¿-¿03¿-¿06T21:00:21.700000000Z' has failed because the Volume Shadow Copy Service operation to create a shadow copy of the volumes being backed up failed with following error code '2155348129'. Please review the event details for a solution, and then rerun the backup operation once the issue is resolved."

I've applied every Microsoft update known to man but still it fails.
ClintonKAsked:
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ClintonKConnect With a Mentor Author Commented:
Since posting this question I have stumbled upon this
http://social.technet.microsoft.com/Forums/en-US/94c5f178-f020-4d0f-ba7c-11c415d0d862/manually-running-psconfig-is-required-after-installing-sharepoint-foundation-2010-updates

Which I'm currently testing. It is summarised as follows:

Run the following commands to determine if you need to complete the update process with PSCONFIG:

Launch an elevated (Run as Administrator) SharePoint 2010 Management shell from start, All Programs, Microsoft SharePoint 2010 Products, SharePoint 2010 Management Shell.
Once the shell opens, type the following command followed by enter:
(get-spserver $env:computername).NeedsUpgrade

If the result of this command is True, then you need to complete the steps below. If the result is False then no further action is needed, if you are encountering similar events the cause will most likely not be resolved by the following steps.

1. Open an Administrative command prompt.
2. Change directory to C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\BIN
3. Run PSConfig.exe -cmd upgrade -inplace b2b -force -cmd applicationcontent -install -cmd installfeatures
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ClintonKAuthor Commented:
This has proved to cure the backup problem and many other errors that were appearing in the Windows Event Log.
Apologies for accepting my own answer but after much searching on the Internet this has proved to be a simple solution to the problem so thanks to the author Susan Bradley (www.sbsdiva.com) who should take all the credit. I think this is worthy of adding to the EE database as a valid solution to the problem.
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