By setting up MFA, you add an extra layer of security to your Microsoft 365 account sign-in. For example, you first enter your password and, when prompted, you also type a dynamically generated verification code provided by an authenticator app or sent to your phone.

Microsoft Authenticator is a free app that helps you sign in to all your accounts without using a password - just use a fingerprint, face recognition, or a PIN.

How to determine what is causing the problem after you do a clean boot. If your problem does not occur while the computer is in a clean boot environment, then you can determine which startup application or service is causing the problem by systematically turning them on or off and restarting the computer.

You can use a simple formula to sum numbers in a range (a group of cells), but the SUM function is easier to use when you’re working with more than a few numbers. For example =SUM(A2:A6) is less likely to have typing errors than =A2+A3+A4+A5+A6. Here’s a formula that uses two cell ranges: =SUM(A2:A4,C2:C3) sums the numbers in ranges A2:A4 and C2:C3.

What is a security key? We currently support several designs and providers of security keys using the Fast Identity Online (FIDO2) passwordless authentication protocols. These keys allow you to sign in to your work or school account to access your organization's cloud-based resources when on a supported device and web browser.

For Windows 8 or Windows 8.1, swipe in from the right edge of the screen, and tap Search. If you're using a mouse, point to the upper-right corner of the screen, move the mouse pointer down, and click Search.Type File Explorer in the search box, and then tap or click File Explorer.

Note: Exporting and importing a mailbox using a .pst file isn't supported in new Outlook at this time. To export a mailbox, you need to use the desktop version of Outlook (also known as classic Outlook) following the steps below.Classic Outlook is included with Microsoft 365 subscriptions that include desktop apps such as Microsoft 365 Personal or Family or Microsoft 365 Business Standard, and ...

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

At Microsoft, we're guided by our AI principles, our Responsible AI Standard, and decades of research on AI, grounding, and privacy-preserving machine learning.Data privacy and security is a key principle of responsible AI. We aim to help our customers use our AI products responsibly, sharing our learnings, and building trust-based partnerships.

Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2