Learn how to unlock your Microsoft account and resolve 'account has been locked' error message.

Discover the step-by-step process to change or reset your Windows password if you've lost or forgotten it. This guide will help you regain access to your Windows account quickly and securely.

Instead of a password, you can use a security key to sign in to apps, websites, and, if you have a work or school account, even Windows. Use this section to change or reset your security key …

Add a password to protect your entire workbook and control whether others can open or make changes to it. Protect your file by setting passwords for Open and Modify.

You can lock only specific cells and ranges before you protect the worksheet and, optionally, enable specific users to edit only in specific ranges of a protected sheet.

Excel gives you the ability to protect your work, whether it’s to prevent someone from opening a workbook without a password, granting Read-Only access to a workbook, or even just …

You can add a password to an Excel file to prevent unauthorized users from opening or modifying it.

If the option I forgot my PIN is not available, you must sign in with your password and then reset the PIN from the Settings app. Select Sign-in options and then select Enter your password.

Learn how to reset or change your Microsoft account password. Get help with a forgotten Microsoft account password.

When you see a section in OneNote for the web that's protected with a password, it means whoever worked on the notebook has locked the section. Here's how to lock and unlock …