Disk Virtual Machine Bus Acceleration Filter Driver (storflt) Service Defaults in Windows 7

Virtual Storage Filter Driver by Microsoft Corporation.

The Disk Virtual Machine Bus Acceleration Filter Driver service does not exist in:

Default Settings

Startup type: Boot
Display name:Disk Virtual Machine Bus Acceleration Filter Driver
Service name:storflt
Service type:kernel
Error control:normal
Group:Extended Base
Path:%SystemRoot%\system32\DRIVERS\vmstorfl.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\storflt

Default Behavior

Disk Virtual Machine Bus Acceleration Filter Driver is a kernel device driver. In Windows 7 it is being loaded by Boot Loader before Kernel initialization. If Disk Virtual Machine Bus Acceleration Filter Driver fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the storflt service is not running because of the error.

Restore Default Startup Configuration of Disk Virtual Machine Bus Acceleration Filter Driver

1. Run the Command Prompt as an administrator.

2. Copy the commands below, paste them into the command window and press ENTER:

sc config storflt start= boot
sc start storflt

3. Close the command window and restart the computer.

The storflt service is using the vmstorfl.sys file that is located in the C:\Windows\system32\DRIVERS directory. If the file is removed or corrupted, read this article to restore its original version from Windows 7 installation media.