This video explains what is happening and your options. No surprise, one of them is Linux.
My desktop is fully compatible with Windows 11 (i.e. no workarounds necessary), and I already have Windows 11 installed on it. My wife's PC uses Windows 11, but with a workaround. The CPU isn't officially supported. Only time will tell whether or not Microsoft will continue allowing this mode.
Are you using Windows 10, even if it's not your main OS? Don't worry, I won't judge. Do you have to support Windows 10 computers in your household or with family? Or are you using Windows 11 already? And if so, is it officially supported? Or are you using a workaround? Comment back and let us know.
My Dell xps 13 uses Windows 11. It came with 10, but was upgraded.