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PSTs fail to backup if device has drive with manual bitlocker drive
ERR_SHADOWCOPYERROR and the detail is “Failed to deserialize data: no valid message start tag found”.
PSTs are backed up using a VSS snapshot. If a bitlocker drive exists which VSS cannot access, we will fail to snapshot every drive.
Fixed in CMX 4.1. We will no longer fail VSS snap shots if there exists a drive with manual bitlocker encryption.