Windows XP Services

Portable Media Serial Number Service - Windows XP Service

Retrieves the serial number of any portable media player connected to your computer. If this service is stopped, protected content might not be down loaded to the device.

This service exists in Windows XP only.

Startup Type

Windows XP edition without SP SP1 SP2 SP3
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Default Properties

Display name:Portable Media Serial Number Service
Service name:WmdmPmSN
Path:%WinDir%\System32\svchost.exe -k netsvcs
Error control:normal

Default Behavior

The Portable Media Serial Number Service runs as LocalSystem in a shared process. It shares the executable file with other services. If the Portable Media Serial Number Service fails to load or initialize, the error is recorded into the Event Log. Windows XP startup should proceed, but a message box is displayed informing you that the WmdmPmSN service has failed to start.

Restore Default Startup Type of Portable Media Serial Number Service

Automated Restore

1. Select your Windows XP edition and Service Pack, and then click on the Download button below.

2. Save the RestorePortableMediaSerialNumberServiceWindowsXP.bat file to any folder on your hard drive.

3. Run the downloaded batch file.

4. Restart the computer to save changes.

Note. Make sure that the mspmsnsv.dll file exists in the %WinDir%\system32 folder. If this file is missing you can try to restore it from your Windows XP installation media.

Yea, though I walk through the valley of the shadow of death, I will fear no evil: for thou art with me; thy rod and thy staff they comfort me.