The solution I posted last year was specific for MacOS. If you are running into this
problem on Windows, create a new Windows OS user with admin privilege, login to that user and try to launch TurboTax. If this works, something is corrupt in the local windows TurboTax profile that is preventing it from launching. Try deleting all TurboTax references in the /Users/Username folder that is crashing, reinstall TurboTax and retry the upgrade. I used this same approach in MacOS and it worked.
