AWS backup VSS error: Windows VSS Backup job error encountered.

Question

The original error was 
Volume Shadow Copy Service error: Unexpected error calling routine RegOpenKeyExW(-2147483646,SYSTEM\CurrentControlSet\Services\VSS\Diag,...).  hr = 0x80070005, Access is denied.
Operation:
   Initializing Writer
Context:
   Writer Class Id: {e8132975-6f93-4464-a53e-....}
   Writer Name: System Writer
   Writer Instance ID: {1c8b51a2-d08e-4c99-91c2-...}

I added the Network Service with FullControl in Diag, and the event log doesn't have this VSS error anymore but I still get the VSS backup job error encountered.
This Ec2 is a Domain Controller, file server with DHCP role and also have DFS enabled.

In my log, I think it required AWS powershell installed?

**EC2 VSS Agent Version: 2.0.0.0
PowerShell version:
5.1.17763.2931
Get-AWSPowerShellVersion not found.
All available PowerShell Modules matching AWS*:
End diagnostic information.
{"Error":"1002","Failures":["Unable to locate AWS PowerShell tools"]}**

Answer

Yes, AWS Powershell tools are required for the current AWS VSS backup to succeed.  You can find documentation on the installation process here: https://docs.aws.amazon.com/powershell/latest/userguide/pstools-welcome.html

AWS backup VSS error: Windows VSS Backup job error encountered.

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