Easy way to link Microsoft account using Microsoft.com/Link
You can quickly link your Microsoft account with devices with a code, and apps or services that prompt you to use Microsoft Account Sign-In. Here's how.
Microsoft is changing the way logins work: here’s what that means for you
Microsoft has (very quietly) announced that it will be changing the way account sign-ins work in February – and the new system could pose a significant security risk for some users.