When doing a win 10 installation I never ever sign into a Microsoft account. Windows 11 installation forces you too. IOW to install 11 you must be online and have an MS account such as a outlook.com mailbox
But I blundered my way past this by putting the wrong password in a few times for my outlook.com account. The installation procedure then moved me along and said to sign in later, which I will never do. Why should I be forced to sign in for their data collection purposes? Screw /em!
#29 Win10 would ask for a Microsoft account to. The workaround is to unplug the network cable when installing. May be the answer for Win11.