not all systems can be upgraded to run with W11. when you get an update notification look on the right, it should tell you if yoiur system is upgradable to W11 or allow you to check .
hears a link to determine if your cpu can run under w11
https://learn.microsoft.com/en-us/windows-hardware/design/minimum/windows-processor-requirements
then there is online both Turbiotax and others
you could also buy a cheap laptop w11 ready and hook it up to your monitor
don't know what other vendors of self-prepared tax returns will do.
