If you can't sign into your Microsoft account, most issues can be identified by our sign-in helper tool. The tool will ask you to enter the email address or mobile phone number you're trying to sign in with and check the details you provide.

The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

Learn how to get Microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your Microsoft account dashboard.

透過 Microsoft Rewards 獲得點數. 做您每天都在做的事，就可以獲得獎勵點數。. 既輕鬆又免費。. 您所要做的只是註冊，Microsoft Rewards 就會包含在您的 Microsoft 帳戶中：. Microsoft Rewards. 註冊之後，請登入 Microsoft 帳戶來查看您目前的點數。. 您也可以在 Bing.com 上的 ...

使用 Microsoft Rewards 赢得积分. 做日常所做的事，即可赢得奖励积分。. 这很简单，而且免费。. 只需注册即可将 Microsoft Rewards 包含在 Microsoft 帐户中：. Microsoft Rewards. 注册后，登录到 Microsoft 帐户可查看当前积分。. 在 Bing.com 上，还可在帐户名称旁看到总积分。.

Add a way to verify sign-in to your Microsoft account. Sign in to the Advanced security options page of your Microsoft Account. Sign in. Select Add a new way to sign in or verify then choose how you would like to receive security codes.

Locate your product key for Windows 10 or Windows 11. Depending on how you got your copy of Windows 10 or Windows 11, you'll need either a 25-character product key or a digital license to activate it.

Your PC isn't working well and you recently installed an app. Restore from a system restore point. You suspect your device has been infected. Use installation media to reinstall Windows 11. Select one of the recovery options below and follow the steps to try to get things working again.

Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

Troubleshooting verification code issues. Microsoft account dashboard. There are a number of possible explanations for why verification codes don't always arrive. Read through the list of the most common causes, and see if any of them apply to you, or use our troubleshooter to help guide you.