qinhh
Returning Member

2021 turbo tax won't start

Today is Dec, 25Tth, 2023, for urgent reason, i need to review my 2021 tax return. when i tried to start, it forced me update to the latest, i did, and when restart it after the update, it  keep asking mee for license code for activation. i entered my code, it says "All available activations for that code have been used. Error code: 603". I purchesed on CD, and installed and used it for prepaaring my 2021 return. Aan I indeed shared the copy with other users  as legally permitted. What is wrong and how can I get it back t owork?