As older versions of AutoCAD could not have been created to work on versions of Windows that didn't exist back then I'm sure there's a lot of AutoCAD users out there like me who would gladly trade our older Windows 10 PC for your Windows 11 version.
I remember as newer versions of DirectX and later Net were required for AutoCAD and installing them caused issues with older versions of AutoCAD that had been installed on the same PC years before that required the older versions of DirectX or Net.