Azure backup - OperationNotAllowed : Changes were made to the Virtual Machine

Fred Fulford 31 Reputation points

Hiya, I have failed backup jobs on one of our VMs a few days in a row, the error is as follows:


Error Code: UserErrorCrpReportedUserError
Error Message: Backup failed due to an error. For details, see Job Error Message Details
Error Message: "OperationNotAllowed : Changes were made to the Virtual Machine 'Example-Server-Name' while the operation 'Create Restore Point' was in progress. Operation Create Restore Point cannot be completed at this time. Please try again later."

I can't find much on this specific error online. I've tried to do general troubleshooting as per ( and have found the following which according to the guide seems out of place:

  • WindowsAgent.AzureSecurityCentre Extension on server is in transitioning state
  • No Azure Backup VM Extension visible in virtual machines - server - extensions
  • No outbound connectivity to on port 443

Can anyone help me to troubleshoot this issue? Many thanks

Azure Backup
Azure Backup
An Azure backup service that provides built-in management at scale.
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Azure Virtual Machines
Azure Virtual Machines
An Azure service that is used to provision Windows and Linux virtual machines.
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