Log Name: System
Event ID: 5
Task Category: None
Message: The Virtual Storage Filter Driver is disabled through the registry. It is inactive for all disk drives.
- The virtual storage filter driver cannot attach to the virtual storage device. The virtual storage filter driver is included in Windows Server 2008. This driver optimizes the performance of disk I/O if Windows Server 2008 is running on a Microsoft Hyper-V Server.
- Windows Server 2008 is installed as the host operating system or as the guest operating system before the most recent version of Hyper-V Server is installed.