Azure backup- Deployment to resource group 'ResourceGroupName' failed.

[rszitoptipl]

I can't enable Azure backup on some my VMs in Azure. I have already virtual machines migrated from classic to ARM, but disks for a few one are still stored in Classic storage. If I try to enable backup I receive error "Deployment to resource group 'ResourceGroupName' failed." "Write ProtectedItems Failed" I also can't migrate this disk to ARM using standard migration procedure. On new machines or corrected migrated I can enable Azure backup without any problems.

[Hi rszitoptipl,]

Hi rszitoptipl, 

  you can see the migration resource from Azure classic into Azure ARM Deployment here.

https://docs.microsoft.com/en-us/azure/virtual-machines/windows/migration-classic-resource-manager-o...

[#3]

I know- storage migration is a solution 🙂 but I get some errors during migration process. I migrated all environment and commit this process but one classic storage account finish with errors. OK, I was hoping that there is some tricky operation. I will retry next days. Thanks