Software Bus Driver (swenum) Service Defaults in Windows 7

Plug and Play Software Device Enumerator by Microsoft Corporation.

Default Settings

Startup type: Manual
Display name:Software Bus Driver
Service name:swenum
Service type:kernel
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\swenum

Default Behavior

Software Bus Driver is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If Software Bus 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 swenum service is not running because of the error.

Restore Default Startup Configuration of Software Bus Driver

1. Run the Command Prompt as an administrator.

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

sc config swenum start= demand

3. Close the command window and restart the computer.

The swenum service is using the swenum.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.