Generic USB Function Class (genericusbfn) Service Defaults in Windows 10

Generic USB Function Class Driver by Microsoft Corporation.

Default Settings

Startup type: Manual
Display name:Generic USB Function Class
Service name:genericusbfn
Service type:kernel
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\genericusbfn

Default Behavior

Generic USB Function Class is a kernel device driver. In Windows 10 it is starting only if the user, an application or another service starts it. If Generic USB Function Class fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the genericusbfn service has failed to start due to the error.

Restore Default Startup Configuration of Generic USB Function Class

1. Run the Command Prompt as an administrator.

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

sc config genericusbfn start= demand

3. Close the command window and restart the computer.

The genericusbfn service is using the genericusbfn.sys file that is located in the C:\Windows\System32\DriverStore\FileRepository\genericusbfn.inf_x86_9fb34a6bf4965cb2 directory. If the file is removed or corrupted, read this article to restore its original version from Windows 10 installation media.