Windows 11 will work with TurboTax software.
May I get some clarifying information? Are you getting an error message? What happens when you try to verify or run the software?
I am also not able to activate TurboTax with a Window 11 system. The screen activation does pop up, but it is completely blank. Absolutely nothing. I have also tried uninstalled and tried again, same results.
A potential cause is that your video card may need to be updated. Please see the following help article for more information:
For additional troubleshooting options, please see Troubleshoot blank screens, missing buttons, or missing images
There is also a detailed solution provided by user @Fneild that many have had success with, you can view that thread here.