November 2014 update rollup for Windows RT/8/2012 breaks VSS backup – hot fix
November 2014 update rollup for Windows RT, Windows 8, and Windows Server 2012 appears to have some issues that cause VSS based backup to break.
Error messages have been ovserved like:
EventId 12366 – VSS – An unhandled exception was encountered while processing a VSS writer event callback method. The VSS writer infrastructure is in an unstable state.
EventId 2034 – MSExchangeRepl – The Microsoft Exchange Replication service VSS Writer when processing the backup completion event.