I'm having a problem with ArcMap consistently crashing on startup, both existing and new MXDs. ArcCatalog opens without issue. ArcMap gives me a message saying "ArcMap has stopped working: A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available."
I've tried many of the solutions provided to those who reported the same problem. I've gone as far as uninstalling both ArcMap and Python and reinstalling, at least twice now. I had the problem with 10.4, and now in the process of trying to fix this I have tried to upgrade to 10.5 but had the same result.
I'm not 100% sure because I went a few weeks without using ArcMap, but the problem may have coincided with a recent Windows update. I am running Windows 10.