Windows 10: Can't Play MP4's

My computer crapped out and a new electrical box was required. Nothing else was done except a cleaning, some newer cables and the video card was relocated to the slot where it should have been installed to in the first place. When I go to open an MP3 or MP4 I get a message "windows cannot access the specific device, path, or file. You may not have the appropriate permission to access them". Everything else I have tried is accessible. What changed? Thanks Frank

:)

 

Playing MP4 files

MP4 is a container file, a lot depends on the codecs within that.
MP4 can be played with Windows 10 with Films & TV, Photos, Windows Media Player, and VLC.
If those can't then there must be something odd/unusual in the file.

Right click the File > Properties > Details Tab.
see if that gives you more info, should be some info on the video/audio but not codecs.

Try the suggestions from post #3.

You have to be careful as viruses are propogated by people simply changing the filename extension and auto-forwarding via an infected PC and a compromised address list.
So a targeted scan with AV is necessary for every file attachement even if apparently from someone you know.

 

Playing MP4 files

ATM am trying Video Inspector, but am unable to load the MP4 file on my desktop for inspection

Suggestions?

 

Windows media player will not play mp4!

Who spends $5,000 on a computer to play .mp4s?

In any case, I have lots of .mp4s and they play well on Windows Media Player. If you've got an .mp4 that won't play, here are two suggestions:

1- download another copy of the file; and

2- ask the content provider for help.