Ok i wanted to assign infanview my favorite image viewer because it shows animated gifs. Others do not. But i cannot find a way to get infranview on the list of default image viewers. Assuming it's possible anyone know how?
Here's one way just to illustrate Irfanview specifically, via rt clicking a jpg and Open With.
Note in Win 8, 10 you cannot assign defaults from within a program.
Here are other ways... the tutorial section is really worth checking for 100s of excellent 'How-to' guides, mostly by @Brink
Default Apps - Choose in Windows 10
Also, try Win-I for Settings, Display, Default Apps, scroll down to Photo Viewer, choose an app. (Imho there's a better one in Control Panel\All Control Panel Items\Default Programs.)
Welcome to TenForums @jacknife1966
If yours is an older version of Irfranview, you may still have a problem setting it as the default viewer. Some of the older versions are incompatible with Windows 10. If you get a notification that "an app default was reset" each time you try to set Irfranview as default then you'll need to download the latest version - as was found to be the solution in this thread.
Setting up Windows 10 Pro
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