If your device is not visible or showing on the Microsoft Account page, re-sign in and refresh the page. If that doesn't work ...
To fix Error 400 when signing into Microsoft account, follow these instructions i.e. use a different mehtod to sign in, ...
You can make your Microsoft account far more secure if you ditch your password. But if you plan to do so, there's a step you absolutely must not skip.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results