I asked ChatGPT to write a Windows GUI C program that looks for a running instance of the onedrive EXE at regular intervals and terminates it while keeping a running log of the attempts in a scrolling window. It took a few iterations to get what I wanted and it was simple to compile with GCC.

You can use a Powershell to see if onedrive.exe is running and kill it with the -force option to do something similar ( ps * onedrive * | kill -force ) with no spaces between the asterisks and the word onedrive, but that turned out to be a little heavier to have running continuously than I wanted.

If you use a process like this, you absolutely need to run it at intervals because the onedrive exe seems to execute at regular intervals.