Windows Media Player stops responding after you install a third-party product that registers its own version of the Wmp.dll file

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Problem description

When you install a third-party product that registers its own version of the Wmp.dll file on a Windows Vista-based computer. Windows Media Player stops responding.

To have us fix this problem for you, go to the “Fix it for me” section. If you prefer to fix this problem yourself, go to the “Let me fix it myself” section.

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Fix it for me

To fix this problem automatically, click the Fix this problem link. Click Run in the File Download dialog box, and then follow the steps in this wizard.

Fix this problem

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Note

This automatic fix works for all languages , however for some languages the wizard text may be in English.

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Note

If you are not on the computer that has the problem, save the automatic fix to a flash drive or a CD and then run it on the computer that has the problem.

Next, go to the "Did this fix the problem?" section.

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Let me fix it myself

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 (http://support.microsoft.com/kb/322756/ ) How to back up and restore the registry in Windows

To resolve this issue yourself, follow these steps:

Log on as an administrator.
Click Start, type cmd in the Start Search text box, right-click cmd.exe, click Run as administrator, and then click Continue.
At the command prompt, type regsvr32 wmp.dll, and then click OK.
Start Notepad.

Paste the following text into Notepad:

REGEDIT4 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA71-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.WMZ" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA72-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.AIFF" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA73-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.AU" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA74-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.MIDI" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA76-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.MP3" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA77-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.MP3" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA78-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.M3U" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA7B-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.WAV" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA83-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.WAX" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA84-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.WMA" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA88-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.AVI" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA89-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.MPEG" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA8F-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.ASX" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA90-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.ASX" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA92-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.ASF" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA93-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.ASX" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA94-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.WMV" 
[HKEY_CLASSES_ROOT\CLSID\{CD3AFA95-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.WVX" 
[HKEY_CLASSES_ROOT\CLSID\{EE4DA6A4-8C52-4a63-BBB8-97C93D7E1B6C}\ProgID]
@="WMP11.AssocFile.WMD"

Save the file as VistaWMPFix.reg.
Start Registry Editor.
Click File, and then click Import.
Select the VistaWMPFix.reg file that you created in step 6, and then click OK.

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Did this fix the problem?

Check whether the problem is fixed by using Windows Media Player. If you can use Windows Media Player with no problems, you are finished with this article. If the problem is not fixed, you can contact support (http://support.microsoft.com/contactus) .
We would appreciate your feedback. To provide feedback or to report any issues with this solution, please leave a comment on the "Fix it for me (http://blogs.technet.com/fixit4me/) " blog or send us an e-mail (mailto:fixit4me@microsoft.com?Subject=KB947541 - Reset Windows Media Player associations) message.

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