System Writer and 'MSMQ Writer seem to get stuck in a "Waiting for completion

SUMMARY

Cryptographic Services failed while processing the OnIdentity() call in the System Writer Object. AddLegacyDriverFiles: Unable to back up image of binary Microsoft Link-Layer Discovery Protocol. Access is denied.

ISSUE

System Writer and MSMQ Writer seem to get stuck in a "Waiting for completion". Resetting them does not resolve the issue

RESOLUTION

This is a known Microsoft issue of related to Event ID 513 when running VSS in Windows Server. The resolution is posted in Microsoft Help Article 3209092
     https://support.microsoft.com/en-us/help/3209092/event-id-513-when-running-vss-in-windows-server

Once completed, please run a new 1-Time Full (on demand) backup.

CAUSE

Unitrends uses the NT AUTHORITY\SERVICE (also known as the local SYSTEM account) to conduct the backups. However, when you review the Microsoft Event Viewer > Application logs, you find the following error:
 

Cryptographic Services failed while processing the OnIdentity() call in the System Writer Object.

Details:
AddLegacyDriverFiles: Unable to back up image of binary Microsoft Link-Layer Discovery Protocol.

System Error:
Access is denied.


 

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