Windows 10: MP4 file opens on personal laptop as XML Document file

That's the screenshot after I unticked the box from your previous post.

Sorry, not sure I know what you mean in the post above - do you mean for me to set VLC as default app for everything?

 

Hi, done that buy VLC still won't play the file.

100%x​

 

can you try and rename that file? remove the .xml and see what happens?

 

I renamed the extension to mp4 and it changed it to this:






But VLC still won't play it. I think I'll maybe try to burn the file on my work laptop to a CD so I can watch it anywhere...might be my only solution...

 

Can you play any other .mp4 files on your laptop?
Can you transfer any other .mp4 files from a usb stick?
Can you try resetting those file associations to defaults?
Default File Type Associations - Restore in Windows 10 - Windows 10 Forums

 

Will try to download other MP4 files on my laptop (as it's new I don't have any other ones). Will do that tomorrow and let you know how I get on.
I reset to default *Smile

 

Ok, this is very perplexing (to me at least).

 

Here is an 8 second mp4 video (created by me for an animation test) You can download at the top right of screen:

(removed link)

 

Right, just managed to download a sample MP4 video and it played just fine in VLC and default Windows program - means there is something wrong with my file and not the laptop! Uft! Or...something wrong with my external memory drive - it might be damaging the file - if that's even possible?

 

Well, the good news is you have localized the problem to being either that video or your usb drive. So, try another usb drive and bring it home. make sure it is formatted as ntfs. the only other thing it could be would be related to the codec that was used to create the mp4 but i have no idea how to determine that from afar. anyway, i think you are good to go now. well,... almost.

 

OK, I just couldn't let this rest so I went on a search and found several articles related to devices that were creating .mp4 videos but they were improperly storing XML metadata inside the .mp4 container. Maybe this is what led to the improper XML file recognition by your PC? So, why does that same video open on your work PC? Who knows? Unless the same software that generated the .mp4 video is also resident on your PC at work?