513Microsoft-Windows-CAPI2Cryptographic 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.This error may be logged during backups on Windows 8.1 (or similar) and can usually be ignored.
Microsoft article on how to fix the permissions that cause this:
https://support.microsoft.com/en-us/help/3209092/event-id-513-when-running-vss-in-windows-server