Fix: Windows Media Player is not installed properly and must be reinstalled.

You might have faced the problem, when you try to run Windows Media Player. An error dialog box appears “Windows Media Player is not installed properly and must be reinstalled.”

Literally it happens due to mismatch version of some core Windows Media Player files. Following reasons may cause the problem like this-

Windows Updates might have failed to installed Windows Media Player updates.
You might have patched Windows Media Player files like wmplayer.exe, wmp.dll and so on.

The error messages may differ, but primarily it state

Windows Media Player is not installed properly and must be reinstalled. Do you want to reinstall from Microsoft website?

Windows Media Player is not installed properly

By following guide, you can also get rid of following errors-

“The file wmp.dll has a version 12.0.XXXX.YYYY where 12.0.AAAA.BBBB was expected. Windows media player is not properly installed and must be reinstalled. Do you want to reinstall from Microsoft website?”

“The file wmplayer.exe has a version 12.0.XXXX.YYYY where 12.0.AAAA.BBBB was expected. Windows media player is not properly installed and must be reinstalled. Do you want to reinstall from Microsoft website?”

“The file wmploc.dll has a version 12.0.XXXX.YYYY where 12.0.AAAA.BBBB was expected. Windows media player is not properly installed and must be reinstalled. Do you want to reinstall from Microsoft website?”

The major version of Windows Media Player may differ as per your Windows and Windows Media Player, for case it is 12

How To:

1. Close all Windows Media Player instances and Run Command Prompt as Administrator

2. Execute the following command-

UNREGMP2.EXE /UPDATEWMPVERSION Or UNREGMP2.EXE /UPDATEWMP

REGSVR32.EXE WMP.DLL

3. That’s it, now you can re-launch Windows Media Player and you won’t get error message anymore.

Applies To:

Windows Media Player 11
Windows Media Player 12

47 responses to “Fix: Windows Media Player is not installed properly and must be reinstalled.”

Jack Simpson

2012-03-25

Mine still doesn’t work :/

Reply
kayemgee

2012-03-16

I have had this same problem with WMP and can’t update it. Could you just reassure me that I won’t lose any music content if I follow these instruction?

Reply
Dharmmy

2011-12-29

OMG, CHRISTIAN PLS COME AND MARRY ME… COME TO DADDY.. I LOVE U SO MUCH… I HAVE BEEN SUFFERING FROM THIS PROBLEM SINCE 2DAYS AND HAVE DONE SEVERAL THING EVEN MICROSOFT COULDNT HELP. I LOVE U DEARLY. THANKS A MILLION

Reply
Bernard

2011-10-17

When I’m in the command prompt. It says it’s not recognized the the internal and external command. Damn it

Reply
MGswimstar2

2011-10-03

Thanks it helped!

Reply
CalMcBig

2011-09-10

I have spent 3 hrs on this , trying all sorts of fixes from Micrsoft (waste of time) and others and withing 5 mins of trying your Fix , Sorted , Thnkyou

Reply
Fulgore_vr

2011-07-30

CHRISTIAN, I REALLY want to tell you sth> I LOVE YOU!!!!!!!!!!!!!!!!!!!!!
thank you so much,

Reply
Raquel

2011-07-26

hi christian ur my hero!!!OMG ILOVEYOU!!!thanks

Reply
Tri Nguyen

2011-02-12

When i put this UNREGMP2.EXE /UPDATEWMPVERSION on command prompt and press enter they didn’t do anything… so whay should i do .. ( i use window 7 ) … can you help me… tks

Reply
Briony

2011-01-20

Wow, that Christian person, their method actually worked. :|

I’m kind of surprised to be honest. I’ve been looking for solutions to this problem for about half an hour, and I was seriously losing hope. There was no way I’d do a System Restore, so I figured it was Goodbye WMP. So, thankyou kind fellow, lol. Very much appreciated.

Reply