I have a Windows Server 2012 R2 Standard with Hyper-V and Kaspersky Endpoint Security 188.8.131.52 installed.
A week or more ago Windows Server Backup started to fail, it says “Windows Backup Failed to Get an Exclusive Lock on the EFI System Partition”.
After I restart the server Windows Server Backup finish correctly.
I guess it have something with Kaspersky. Someone could help?