After allowing the latest TurboTax update to install, any TurboTax file I save gives Error TT400. Is the latest update defective?

[s-watts]

I did have success in uninstalling then reinstalling and saying "no" to updates when it opened.  I continue to say "no" to updates each time I open it.  (I did download the installer fresh today from their website).

[send2me43]

I spoke to Support. uninstall software then reboot and reinstall. move the .tt17 file to another location and rename the ttbk file to .tt17.

[TurboTaxJennifer]

If you are experiencing this error, please contact our support team for assistance.

https://turbotax.community.intuit.ca/replies/3152013