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AbhishekMallick01
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Addressed EEE doc ask #32812767
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articles/backup/backup-azure-vms-troubleshoot.md

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@@ -3,7 +3,7 @@ title: Troubleshoot backup errors with Azure VMs
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description: In this article, learn how to troubleshoot errors encountered with backup and restore of Azure virtual machines.
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ms.reviewer: srinathv
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ms.topic: troubleshooting
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ms.date: 06/02/2025
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ms.date: 06/19/2025
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ms.service: azure-backup
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author: jyothisuri
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ms.author: jsuri
@@ -556,15 +556,15 @@ Verify the VM Agent version on Windows VMs:
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VM backup relies on issuing snapshot commands to underlying storage. Not having access to storage or delays in a snapshot task run can cause the backup job to fail. The following conditions can cause snapshot task failure:
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* **VMs with SQL Server backup configured can cause snapshot task delay**. By default, VM backup creates a VSS full backup on Windows VMs. VMs that run SQL Server, with SQL Server backup configured, can experience snapshot delays. If snapshot delays cause backup failures, set following registry key:
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* **VMs with SQL Server backup configured can cause snapshot task delay**. To avoid that, currently VM backup creates a VSS full backup (Copy-Only) on Windows VMs. If you need a VSS Full backup (Non-copy Only) then add the following registry key on the Windows VM:
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```console
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REG ADD "HKLM\SOFTWARE\Microsoft\BcdrAgent" /v UseVssFullBackup /t REG_SZ /d True /f
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```
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>[!Note]
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>From December 12, 2022, Azure VM backup automatically sets the registry key in the existing protected Azure VMs that are registered as SQL VMs. Now, you don't need to explicitly set this registry key. This ensures that snapshots aren't delayed and any log chains managed by other backup products are also not broken. Azure VM backup now also set the registry key in any new SQL VMs automatically during the configuration of backup.
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>**Copy-Only** backups ensure that snapshots aren't delayed, and any log chains managed by other backup products are also not broken.
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* **VM status is reported incorrectly because the VM is shut down in RDP**. If you used the remote desktop to shut down the virtual machine, verify that the VM status in the portal is correct. If the status isn't correct, use the **Shutdown** option in the portal VM dashboard to shut down the VM.
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* **If more than four VMs share the same cloud service, spread the VMs across multiple backup policies**. Stagger the backup times, so no more than four VM backups start at the same time. Try to separate the start times in the policies by at least an hour.

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