Do you confirm the Windows packager for JOSM version 18193 no longer runs on 32-bit Windows (“The version of this file is not compatible with the version of Windows you’re running. Check your computer’s system information to see whether you need an x86 (32-bit) or x64 (64-bit) version of the program, and then contact the software publisher.”)?
I cannot answer your question but I have an observation to add that might help others. When I installed v 18193 on my Win10 laptop I noticed that it installed in a different folder. The older versions installed into a folder where the 32-bit versions of software belong, that is, C:\Program Files (x86)\JOSM. This new version installed into C:\Users\Alask\AppData\Local\JOSM\
My issue is that the old version wasn’t uninstalled so now I have two distinct versions on my computer, a 32-bit one and a 64-bit one. I have been reluctant to uninstall the 32-bit version for fear I would lose my preferences. I have a ton of custom presets and menu items that would be painful to reconfigure if lost.
Apologies, I’m not trying to hijack your thread but I am curious to see if any JOSM maintainers will step up to answer your question, and while they’re at it, clarify the entire issue.