Contacting the team has not helped. I spent all day on the phone with an expert, we did EVERYTHING suggested in this thread. They used literally every tool available. NOTHING helped. Not one thing. We did a complete uninstall, downloaded and reinstalled as if brand new, and with a brand new company file, it still crashes completely when trying to do a simple, daily task of importing journal entries.

SO: please do not make any more suggestions punting to the customer support team because they also cannot fix it. My call escalated 3 times and we had the most senior person available helping, and after 6 hours was told they could not fix it and I had to enter them manually. I am not using an accountant's copy either, this is my regular QB 2020 file trying to import journal entries sent from my accountant. (again, tried every. single. suggestion. on this thread).