Microsoft wants you to use online accounts in Windows 11, yes, but they're not as mandatory as you might think.

How many times have you been locked out of your PC because you accidentally spammed the wrong PIN or exceeded the max number of sign-in attempts? This and starting Windows in Safe Mode are two ...

To fix the “Cannot install Windows, BitLocker Drive Encryption is enabled on selected partition” error, suspend BitLocker via Settings or Control Panel, or use your recovery key to unlock the drive.