Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

If your organization is using multi-factor authentication (MFA) for Microsoft 365, the easiest verification method to use is the Microsoft Authenticator smart phone app. It's just one click instead of typing in a 6-digit code. And if you travel, you won't incur roaming fees when you use it. Download and install Microsoft Authenticator app

Hotmail is now Outlook.com To sign in to Hotmail, you'll need your Microsoft account username and password. Sign in at outlook.live.com

在 Android 设备上安装 Authenticator Google Play 商店在中国不可用，因此只能从以下商店下载Microsoft Authenticator： 联想 Oppo – 搜索要从 Oppo 存储区下载Microsoft Authenticator。 三星

How tech support scams work Scammers may call you directly on the phone and pretend to be representatives of a tech company. They might even spoof the caller ID so that it displays a legitimate support phone number from a trusted company. They'll probably ask you to install applications that give them remote access to your device. Using remote access, these experienced scammers can ...

Before you can use Authenticator as a way to sign in, you need to download the app and have already added Authenticator to your accounts. Starting July 2025, the autofill feature in Authenticator will stop working, and from August 2025, passwords will no longer be accessible in Authenticator.

Learn how to add all your different accounts to the Microsoft Authenticator app.

Learn how to sign in to your Outlook or Hotmail mailbox using your Microsoft account.

As your apps are installing you might see the User Account Control prompt pop up and ask Do you want to allow this app to make changes to your device? Select Yes.

Learn how you can use the free Microsoft Authenticator app to sign in to all your accounts without using a password.