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You receive the following error during the guest processing: Unable to release guest. Error: Unfreeze error (over VIX): [Backup job failed. Cannot create a shadow copy of the volumes containing writer's data. A VSS critical writer has failed. Writer name: [SqlServerWriter]. Class ID: [{a65faa63-5ea8-4ebc-9dbd-a0c4db26912a}]. Instance ID: [{6323fe10-0205-47df-b015-4a5ff60c31e2}]. Writer's state: [VSS_WS_FAILED_AT_PREPARE_SNAPSHOT]. Error code: [0x800423f4].]
If an update to Azure AD Connect or Microsoft Entra Connect was recently installed, a repair of the SQL installation should fix the issue.Note: Even if a recent update wasn't installed, it may be worthwhile to attempt the repair. Open the list of installed applications. Find and select the Microsoft SQL Server 20XX Express LocalDB entry. Click Modify.
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