Desktop, or Online software?
IF Desktop Windows TTX software, check for any waiting/partially installed Windows OS updates. Waiting updates are known to cause TTX software issues.
Even if none are waiting (or even if you are using the Online Browser-based software)...do a full reboot of your computer and try again.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
