Windows 10: mp4 files no longer play after Windows Update

My mp4 files (those created within the past 2 years only) will no longer play on my computer.


Actually if I upload them to the web, open with VLC, or open in Firefox they will play. If I attempt to open them with Movies & TV, Window's Media Player or Movie Maker, I receive the following message, "Can't Play. This file isn't playable. That might be because the file is unsupported, the file extension is incorrect, or the file is corrupt. 0xc00d36c4" The video files will also play on my phone, but not after being uploaded to my computer.


Oddly, the same thing is happening on my husband's computer. What's going on!? How do we fix it?

:)

 

I cannot get .mp4 files to play in windows 10.

Hello Erik,

Thank you for bringing up your query on Microsoft Community.

Apologize for the difficulties that you're experiencing in Windows 10.

Please provide us the following information:

• 
  Which application are using to play mp4 files?
  
• 
  What happens when you try to play the mp4 file?
  
• 
  Do you receive any error code/message?
  
• 
  Are you able to play other files?
  

Do update us with the details, we are glad to assist you.

 

Edge browser & Movie app of Windows 10 could not play mp4 files

Hi Ngo Tuu Duc,

• Is the issue confined to MP4 files?
• Does other file formats play fine?
• Do you get any error message?

I suggest you to refer to the link and check if it helps.

Adobe Flash Player issues with Windows 10 (Microsoft Edge)

Please update us with the status. We will be glad to assist you.

 

Media Player no longer plays Mp4's

My new Windows 10 computer won't play MP4 or WMV videos after last Windows update. Either it never stops loading or says "Can't play file".

I followed steps to 'troubleshoot' Windows Media Player and got a message (even when running as Admin) that settings may be incorrect, but reset of settings does not fix it. HELP!