Windows 11 issue

Solution 1:

The only Windows 11 upgrade is from a Windows 10 system. That is the licensing you need.

Also Windows 11 is not "official" - just pre-release.

Join the Windows Insider Program (A setting in Windows Update and then pick your channel and install Windows 11.

Also remember that Windows 11 will download that big file about once a month. Probably one more download until October release.

I have it running here.