Get your taxes done using TurboTax

@ webweweave   When TurboTax is installed on a drive other than the recommended one, it can make troubleshooting more difficult.

 

I don't know if it will help, but here are some things I'd try while you wait for any other suggestions.  Maybe you already did, but I have no way to know.

 

If using Windows, did you try a manual update?

https://ttlc.intuit.com/turbotax-support/en-us/help-article/update-products/manually-update-turbotax...

 

Also, this past week was Windows update week.   If you're using Windows and got last week's updates, be sure that all your current Windows updates have finished installing before running the manual update.  Sometimes downloaded but incompletely-installed Windows updates will be lingering in the background.