Solved Cannot assign default app for .jpg or .jpeg files in Irfanview

How in the world did you FRY the SSD of Windows 11?

I just wish I could get a handle on what the problem is for your .jpg files and your IrfanView installation. Mine (both) work perfectly, I use the button in IV's Edit to open Paint from time to time, and every .jpg I've got opens by default in IrfanView.

Yes.

This is the context menu I get for jpg files and it shows the expected Open with entry.



All the best,
Denis

Mine for a .jpg:

If you’re still curious, or having issues with associations (I understand you have a new install of windows so possibly not)

If I ever have an issue with file associations, I use this table to restore defaults then work from there after. Scroll down to the default app table.

If anyone is reading this old thread...
I banged my head trying to change file associations for image files to IrfanVew.
Trying every tip I found, and NO, the standard ways does NOT work.
Changes are made but does not take effect.
I almost gave up when I found out that it wasn't me that was mad..
It's Micro$oft !
They have decided that their choice is the only one. Surprised?

But then I found a IT Consultant in Switzerland (, where else..) who is just as stubborn as me.

Here is the solution:
SetUserFTA: UserChoice Hash defeated – Set File Type Associations per User or Group on Windows 8/10/11 and 2012/2016/2019/2022

SetUserFTA: UserChoice Hash defeated – Set File Type Associations per User or Group on Windows 8/10/11 and 2012/2016/2019/2022 – the kolbicz blog

With this tool you can also take a backup of all your default programs, useful
when re-installing Windows.

Or, just get a copy of Default Programs Editor. Small, powerful, and free.

Same problem.

I solved it by installing Windows Photos.
Next I Reset the App and removed defaults.
Then right-clicked on a JPG and Choose Another App and was able to select IrfanView with Always Open.
Same with PNG files. Probably needed with JPEG too.