Archlinux RDP Connection Issues
If you are using the RDP protocol from a non-Windows device to remotely control a Windows machine logged in with a Microsoft account, the username you enter when connecting might not be your Microsoft account (email), nor the remaining part after removing the email suffix, and certainly not Administrator. Instead, it could be some other value. You can check this by running echo %USERNAME%
on the controlled machine. Although this value is set by yourself, it’s completely nowhere to be found in the system settings. I was really frustrated trying to figure this out for quite a while.