Can different Windows 10 local account login on the same computer to use TurboTax Premier 2021 that was installed from CD?

[Gordon3]

I used a CD to install TurboTax Premier Tax Year 2021 on Windows 10. It works fine for my Windows 10 local account. Can my son use a different Windows 10 local account to login on the same computer to use TurboTax for his taxes?

[Gordon3 · Accepted solution]

It turns out that you can indeed use the software on the same Windows 10 PC from different Windows 10 local username and password accounts. I installed and started using the software in my Windows 10 local account a few weeks ago. Today I tried launching TurboTax on the same computer while logged in to Windows as my son (rather than using my own account). The issue appears to be that I was actually blocked at a point where the TurboTax 2021 Activation screen was simply not displaying, seemingly because the software could not reach Intuit's Activation Server. I saw something similar to what another user posted for a TurboTax Deluxe 2019 issue, but mine indicate TurboTax 2021. I have borrowed that image and used here since I had not taken a picture of it while the issue was happening on my computer.

Intuit Activation Server not reached - Example from User of TurboTax Deluxe 2019

For some reason, my computer was unable to contact the Intuit activation server. I read about several solutions, none of which worked in my case. I did not try changing the screen resolution, but did try to launch TurboTax Premier 2021 with my anti-virus software and my firewall turned off, which did not work. I re-enabled the firewall and anti-virus. Then I rebooted and tried logging into my son's Windows 10 account and launching TurboTax again; the problem was resolved, meaning instead of being blocked, I was prompted by the activation window shown below.

TurboTax 2020 - Activation

Notice that the activation window indicates “5 computers”. Only 1 computer is involved in this case, but a separate Windows 10 local user account also needs to activate.