Outlook/Hotmail Email Unlock Tutorial
The Microsoft mailboxes used on this site are divided into two types: Outlook and Hotmail. Login URL: https://outlook.live.com. Both types of mailboxes may be temporarily locked if not logged in for a long time or if logged in from a different location. Re-logging in will require a verification code to unlock, as shown in the figure below:

Don't panic at this point; the mailbox is fine and completely okay. You just need to follow the prompts, click next, and enter a phone number that can receive verification codes to unlock it. This phone number will not be bound to the mailbox; it is purely for verification and unlocking, as shown in the figure below:


It has now been unlocked. Click continue to log in. At this point, if the mailbox is not bound to a secondary email, it will prompt you to bind one within 7 days. If you need to use it long-term, bind a secondary email. For temporary use, you can choose to skip for now.

You can fill in your own email or skip it.
Finally, just make sure to click "No, thanks" in the step shown in the figure below to log in to your mailbox normally.
