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 ...
If you have been surprised with a message in your Microsoft Account Security settings that says “Your security info change is still pending,” then it is nothing alarming but needs a check if you don’t ...
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.