Serenum Filter Driver Service Defaults in Windows 7

Serial Port Enumerator by Microsoft Corporation.

Default Settings

Startup type:Manual
Display name:Serenum Filter Driver
Service name:Serenum
Service type:kernel
Error control:normal
Group:PNP Filter
Path:%SystemRoot%\system32\DRIVERS\serenum.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Serenum

Default Behavior

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

Restore Default Startup Configuration for Serenum Filter Driver

1. Select your Windows 7 edition and service pack, and then click Download.

2. Save the Win7_Serenum_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The Serenum service is using the serenum.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.