Hyper-V backup or replication job with guest-processing fails after installing Windows Update KB3000853

After installing November roll-up update http://support.microsoft.com/kb/3000853 on 2012 Hyper-V hosts, VSS-enabled backups may be failing in any backup solution. In Veeam you will get "Unable t...

Unknown drive type [ISO]

Challenge After applying patch 1 for 6.1.0.181 you are no longer able to backup or replicate Hyper-V virtual machines, jobs fail with the "Unknown drive type ISO" error. The following entries can be seen in the job log: timestamp Error Failed to parse drive xmlnode. Xml:...

VSSControl: -2147467259 Backup job failed. Cannot collect writers metadata. VSS asynchronous operation is not completed. Operation: [Gather metadata]. Code: [0x80042318].

Challenge A backup job fails with the following error: VSSControl: -2147467259 Backup job failed. Cannot collect writers metadata. VSS asynchronous operation is not completed. Operation: Gather metadata. Code: 0x80042318. Copy Cause The Volume Shadow Copy service within the machine being backed u...

VSSControl: -2147024784 / 0x80070070: There is not enough space on disk

Challenge A job with Guest Processing enabled fails with either: VSSControl: -2147024784 Backup job failed. Cannot create a shadow copy of the volumes containing writer's data. Cannot prepare the Exchange server data to a subsequent restore operation. Cannot store backup/restore manifest. Serial...