Is this a retail purchase? Did you install the correct desktop version that you have purchased?

I recommend uninstalling the software and using this link to re install it. Where can I get the Desktop edition of TurboTax?

Continue with the following instructions:

• Run as Admin: Right-click the TurboTax icon and select Run as administrator.
• Disable Security: Temporarily turn off your VPN, Firewall, and Antivirus, as these often block activation servers and turn it back on once it is activated.
• Update OS: Ensure your OS meets requirements and is up to date.
• Check the Code: Confirm the 16-character code is from your email or box, not the store receipt.
• Match Product: Ensure you aren't trying to use an "Online" code for "Desktop" software.
• Limit Check: One license allows installation on up to 3 computers. If you've exceeded this, the code will fail.
• Avoid Lockouts: Stop after two failed attempts to prevent a temporary security lock on your code  

Let us know how it goes.

Thank you for choosing TurboTax.