Class not Registered Windows Media Player

Currently on build 16215 and since this update I get "Class not Registered"  when I try to play mkv files using Windows Media Player

Rolling back solved the issue but with the update again I still have the problem.

Surface Pro 3 being used

Thank you

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Last updated January 3, 2019 Views 279 Applies to:

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Sadly, the problem continues after updating to Build 16237.  I upvoted every entry in Feedback Hub that I could find on this issue.  What assurance can you give us that this feedback is reaching the engineers who need to fix the problem real soon?

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Here is the link to the feedback hub post

Class Not Registered

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Hello,

If you already submitted a suggestion on Feedback Hub, let us review your concern and will let you know if there updates that will be release.

Should you need more help with anything, you can contact us again.

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Hi Bulldog

Are you using a 64 bit version if so, try this....it was suggested by another insider on this forum.  Go to program files X86/ windows media player and delete the WMP exe file.  You will have to change the ownership of the file but there are tutorials on that.  Then go to Program files (NOT X86) /windows media player and copy the exe file.  Paste the copied file back into the X86 version.  I hope this makes sense.  This worked for me and I am now playing FLAC files on WMP as I used to by double clicking on the files.

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Terry.Lister's solution solved the problem for me. Thank you very much! :D

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