How do I turn off Windows 10 clipboard, and reinstate traditional (NT XP 7) clipboard?

Question

How do I turn off Windows 10 clipboard and reinstate the traditional (Windows NT XP 7) clipboard?  I want to turn Windows 10 clipboard OFF, permanently, and get traditional clipboard working permanently.

I figured out more-or-less workarounds in mid-2024, and got my old applications working. But a Windows update in January or February 2025 seems to have broken it completely. I have followed the suggestions at https://answers.microsoft.com/en-us/windows/forum/all/how-do-i-turn-off-clipboard-it-is-terrible/d70b2c47-e364-49e8-aad4-8f2d8a96ee3d and https://learn.microsoft.com/en-us/answers/questions/1352565/clipboard-problem-copy-paste-not-working-on-window    At best, they work only temporarily (either the instructions don't conform to what I see on my screen, or I've followed them and the problem fixes for ten minutes after a reboot, and comes back in a few minutes). I have restarted multiple times per hour, etc etc and I cannot get the clipboard (old or new) to work and stay working. It seems to be completely random--some copy/paste operations work, but most don't reliably.  After I reboot, copy/paste works for a few minutes, then something changes, and it doesn't work until I reboot yet again.

In 25 years, I have had maybe two situations where a multi-entry clipboard would have been nice. If I ever needed it, there's an easy workaround -- just open a temporary doc, paste what I need there, paste the pieces as I need them, and voila I'm all set. In contrast, this new Windows 10 clipboard breaks lots of stuff in existing applications. It's a loser.  I want it GONE.

I do not want the new clipboard. I use older applications extensively that use the old clipboard. I want the old clipboard Permanently.

Are there specific KB's I should back out?

Thank you