I have a similar issue, in that having re-installed the program (downloaded TurboTax Premier 2024), I now get the message: "All available activations for that code have been used.Error code: 603" and the program won't run!

Can someone provide some guidance, please!

I called the support line ([phone number removed]) and told the AI that I needed to speak to a person. I was connected within about five minutes, and about 10 minutes after that, I had a new code. I'm now back up and running.

Apparently, this is a daily problem for them.

The support rep was very helpful, and that makes all the difference.