The real world doesn’t run on micromush’s support.
I too have software that needs XP, as well as software that needs real DOS 6.22, so I have machines dedicated to both, and the DOS machine multi-boots to DOS or Win 98SE, so that I can transfer data by USB2.
None of this is going away, because that is how the world of engineering operates.
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Good to know, because making the update to the newer stuff is not in my budget at the moment, except on a limited basis. Sadly, the industry I work in has reached the tipping point where an influx of new people pushed the new software into preeminence, merely by virtue of numbers (They were not around when the older forms were in use), and the 'upgrade' to a form which requires quarterly licensing will only cost those of us who had the older, fully licensed forms a small fortune to 'upgrade'. I can perform all of the basics and produce the same products using the older form, but the 'free viewer' put out by the manufacturer no longer recognizes the older form, and those who upgraded their viewers to see the newer version can't see the old files (including over a decade of legacy files from older work).
It is a pain in the nether regions, to say the least.