CS2 - yes it's old, so am I but can you help, please?

What I find frustrating is how random this error seems to be. I've been running InDesign CS2 and other CS2 programs fine on Windows 10 for two years now, but just today, InDesign gave me the same error, and there don't seem to be any consistent fixes for it, or even any explanation of why this happened. It worked fine a month ago. Photoshop still worked fine today. But InDesign threw this error, and most of the solutions found on the internet seem to be either "try deleting this registry key" or "go buy a newer version" accompanied by comments of "you're SOL" or "why are you even using such ancient software?" I don't use the suite enough for a subscription to CC to be worth my money, unfortunately, and there's no way to acquire a newer-but-not-subscription-based Creative Suite at this point.

However, if anyone else stumbles across this thread like me, what did end up working was a suggestion I did find in one thread. Use the Windows 10 Search box to get to the Program Compatibility Troubleshooter (searching "run programs for previous versions of Windows" worked) and run it, and let it find the best settings for the program, then save those settings.