Windows 10: Unable to Open Photos or Videos: "Windows Cannot Find" & "Class Not Registered" Errors

Hello,I’ve encountered a critical issue on my Windows 10/11 system where I cannot open certain files. Specifically:Images:When I try to open a .png file using the Photos app, I get the following error:“Windows cannot find [file path]. Make sure you typed the name correctly, and then try again.”The file exists, and I was able to send it to myself via WhatsApp without any issues.Videos:When trying to open a .mp4 file, I get the error:“[file path] class not registered.”However, I can play the same video on WhatsApp after sending it there.This issue started suddenly last night and has persisted si

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"class not registered" error

Hi Eddie,

For better assistance, are you getting the error with this specific file only?

We suggest checking this thread to resolve the "Class not Registered"
error.

We're looking forward to your reply.

 

I cannot open images and get "Class not Registered" error

Very strange. Yesterday I could view my NEFs and JPGs, today I got the "Class Not Registered" error. W10 has been in for an age and nothing I know of has changed. I followed the suggestions in the rest of this article but nothing worked. I noticed that if
I right-clicked an image and used "Open wIth", the "Photos" option was very faint. So I used the Start menu, scrolled down to "Photos" and opened it. That worked okay.

And the "Class Not Registered" problem has gone away, too. I can now double-click any image and it opens in the Photos app.

Maybe opening the Photos app directly registers the Class? I'm not techy enough to know the answer to that.

 

Unable to open my DSLR: Class not registered error.

hey

Getting error : class not registered.

able to open other USB devices with no issue.

camera is sony cyber shot hx 400.

ny suggestions ll be helpful

thnx