Well, I think it is a new Windows Defender Function and Update that prevents TuroboTax from saving files.
You will need administrator access. You will go into Windows Security (search via Cortana Search bar), then go to "virus and that protection settings", then go to "manage controlled folder access", then select "allow an app through Controlled folder access", and (finally) "add an allowed app".
If you already tried use TT to save, select the "recently blocked apps" and select the Turbotax.exe , else find your installed application and select the executable file.
I was able to save a file afterwards.
For security purposes, you may want to remove approval once you are done filing. A hacker may take advantage of this allowance in the future.
