I'm having the same issue. Actually, this is the second time this tax season this has happened to me. I fixed it the first time by completely uninstalling and then reinstalling turbo tax. I'm assuming I will have to do the same thing again. it's very frustrating.
When I launch turbo tax it pops up with the dialog that it is checking for updates then that quickly closes and the program closes. I'm running Mac OS big sur 11.1
