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

Virtual Storage Filter Driver by Microsoft Corporation.

Default Settings

Startup type:
Windows 7 Starter SP0N/A
Windows 7 Home Basic SP0N/A
Windows 7 Home Premium SP0N/A
Windows 7 ProfessionalBoot
Windows 7 UltimateBoot
Windows 7 EnterpriseBoot
Windows 7 Starter SP1N/A
Windows 7 Home Basic SP1N/A
Windows 7 Home Premium SP1N/A
Windows 7 Professional SP1Boot
Windows 7 Ultimate SP1Boot
Windows 7 Enterprise SP1Boot
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 for 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 %WinDir%\system32\DRIVERS folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 7 installation media.