I want to customise my JPG icons in Windows 10 (Home), and I should like to use the Windows registry to do so.
I have changed the DefaultIcon value under HKCR\.jpg to my custom icon, and the corresponding value under HKCR\jpegfile (which I have set as the ProgID for .jpg.)
The problem is that the changes do not show up on my desktop, even after refreshing the icon cache.
The user @UnderATree gave me a link, which proved useful, in that it referred me to HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts. I can see that .jpg has a UserChoice sub-key, and its ProgID value is set to AppX43hnxtbyyps62jhe9sqpdzxn1790zetc, which seems to be some Windows Picture programme.
Now, my problem is that one cannot easily undo user choices from the registry, and I do not know how to set the ProgID from the GUI (one can set the programme with which to open the files, but I want the ProgID to be jpegfile, which is not a programme in itself, I think.)
(I have edited this question as per the request of UnderATree. I hope I am making more sense now.)
EDIT: After having been diving into the issue, I have concluded that I simply wish to set the ProgID for JPEG files. However, because of the UserChoice for JPEG's, I cannot do that. I can choose to open JPEG's with a particular programme through the GUI, but if I choose to open JPEG's with PaintBrush, for instance, they get the same icons as BMP's. I want the different file types to have different icons, even though I open them with the same programme. Does that make sense?