How to sign in to Microsoft Teams with modern authentication. How to sign in to Microsoft Teams is you are having trouble.

If you are an identity provider or a website owner who doesn't rely on Microsoft’s enterprise or consumer identities, Microsoft Authenticator app can still help you secure the identities of your users who use two-step verification.

Want to add a padlock to your email messages? You can use S/MIME in Outlook on the web to increase the security of messages. A digitally encrypted message can only be opened by recipients who have the correct key.

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

Get answers to common questions about Windows 11 and Windows 10 in S mode.

Note: If you receive a prompt asking whether to allow the app to access your camera (iOS) or to allow the app to take pictures and record video (Android). select Allow so the authenticator app can access your camera to take a picture of the QR code in the next step.If you don't allow the camera, you can still set up the authenticator app as described in Manually add an account to the app.

Learn how to add or change a virtual private network (VPN) connection in Windows.

Learn how to turn on device encryption, or standard BitLocker encryption in Windows.

如果知道用户名和密码但已停止工作，请阅读 我的用户名和密码已停止工作。. 如果你忘记了 Microsoft 帐户用户名或电子邮件地址， 并且 之前已在 Microsoft 帐户上设置了其他 安全信息 ，请按照以下步骤操作。

Find out how to submit a request for a refund for a purchase of digital Xbox content.