I reinstalled windows 10 and now itch.io windows app is broken. The previously downloaded games were deleted but itch still says "Launch" instead of "install". When I click the Launch, absolutely nothing happens.
Any ideas for a fix?
Hm. Personally, I use Windows 7, but maybe the issue stems from the method you used to reinstall Windows 10.
If any other software has acted up since then, you might find help on a board dedicated to Windows. Because if there is one thing for certain in this world, it is that people will talking with each other about their problems with Windows. ;)