513
Microsoft-Windows-CAPI2
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.
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