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OPERATIONAL DEFECT DATABASE
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Quiesced Snapshots are failing for a Windows VMLikewise, 3rd party backups are failing as wellwhen reviewing the vmware.log of the VM, the following errors can be found: 2024-02-20T11:18:23.933Z In(05) vmx - Msg_Post: Warning 2024-02-20T11:18:23.933Z In(05) vmx - [msg.snapshot.quiesce.vmerr] The guest OS has reported an error during quiescing. 2024-02-20T11:18:23.933Z In(05)+ vmx - The error code was: 5 2024-02-20T11:18:23.933Z In(05)+ vmx - The error message was: 'VssSyncStart' operation failed: IDispatch error #8451 (0x80042303) The Windows Application Event log in the guest OS holds error events ID 8193 from VSS similar to the one below: Log Name: Application Source: VSS Date: 20/02/2024 11:15:06 Event ID: 8193 Task Category: None Level: Error Keywords: Classic User: N/A Computer: redacted Description: Volume Shadow Copy Service error: Unexpected error calling routine CLSIDFromString({564d7761-7265-2056-5353-000000010000}). hr = 0x80070002, The system cannot find the file specified. . Operation: Unregistering Provider Context: Provider ID: {564d7761-7265-2056-5353-2050726f7669} Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="VSS" /> <EventID Qualifiers="0">8193</EventID> <Level>2</Level> <Task>0</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2024-02-20T11:15:06.9357670Z" /> <EventRecordID>7090</EventRecordID> <Channel>Application</Channel> <Computer>redacted</Computer> <Security /> </System> <EventData> <Data>CLSIDFromString({564d7761-7265-2056-5353-000000010000})</Data> <Data>0x80070002, The system cannot find the file specified. </Data> <Data> Operation: Unregistering Provider Context: Provider ID: {564d7761-7265-2056-5353-2050726f7669}</Data> <Binary>2D20436F64653A20434F525052564D4330303030313530322D2043616C6C3A20434F525052564D4330303030313339382D205049443A202030303030343934302D205449443A202030303030343934342D20434D443A2020433A5C57696E646F77735C73797374656D33325C76737376632E6578652020202D20557365723A204E616D653A204E5420415554484F524954595C53595354454D2C205349443A532D312D352D313820</Binary> </EventData> </Event>
This issue occurs when a stale registry key for the VMware Snapshot Provider is left in Windows registry: HKEY_LOCAL_MACHINE\STSTEM\CurrentControlSet\Services\VSS\Providers\{564d7761-7265-2056-5353-2050726f7669} This key should only exist while a quiesced snapshot is being created or consolidated, but not before or after.
To resolve this issue, follow the steps below: Connect to the Windows registry in the guest OS of the affected virtual machine using the regedit utilityExport the registry branch HKEY_LOCAL_MACHINE\STSTEM\CurrentControlSet\Services\VSS\Providers as backupIn the branch, find the registry key {564d7761-7265-2056-5353-2050726f7669}Delete the keyExit regedit and reboot the virtual machine Once these steps have been taken, please try taking a quiesced snapshot of the virtual machine to confirm the solution.