If the 64-bit works, use it. Just checked my (rather older) IrfanView
32 on a 32-bit Win-10 and PAINT.DLL is listed as a plug-in. Perhaps if
you have both 32- and 64-bit installed the program is trying to use the
wrong version?
By the way, I install to C:\Tools\ rather than the more protected
Program Files tree(s), but I wouldn't recommend that for a shared PC.
--
Cheers,
David
Web:
http://www.satsignal.eu