Enhanced Storage Filter Driver (EhStorClass) Service Defaults in Windows 11
Enhanced Storage Filter Driver.
Default Settings
| Startup type: | Boot |
| Display name: | Enhanced Storage Filter Driver |
| Service name: | EhStorClass |
| Service type: | kernel |
| Error control: | normal |
| Group: | SCSI Class |
| Path: | %SystemRoot%\System32\drivers\EhStorClass.sys |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\EhStorClass |
Default Behavior
Enhanced Storage Filter Driver is a kernel driver. In Windows 11 it starts by the operating system Boot Loader before the Kernel initialization, as a part of the driver stack. If Enhanced Storage Filter Driver fails to start, the failure details will be recorded into Event Log. Then Windows 11 should boot up and notify the user about the EhStorClass service startup failure.
Restore Default Startup Configuration of Enhanced Storage 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 EhStorClass start= boot
sc start EhStorClass
3. Close the command window and restart the computer.
The EhStorClass service is using the EhStorClass.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 11 installation media.