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.

You can resolve problems with Microsoft Authenticator by checking the tips in this article and reviewing some of the known errors. Tips: If you're using mobile data, try switching to Wi-Fi and vice-versa. Make sure Airplane mode is off.

To unblock your account, you'll need to reset your password. Enter the email address of the blocked account, then enter the characters you see on your screen and select Next. Enter the code generated by your authenticator app or select Use a different verification option to get a text message.

If your account has been hacked, use our sign-in helper tool below to help guide you to the right solutions. The tool will ask for your email address or phone number, and either show appropriate self-help, or offer the chance to talk to an agent.

If you can't see the desktop and instead see a blue, black, or blank screen, see Troubleshoot blue screen errors or Troubleshoot black or blank screen errors. Check for Windows updates. Learn how to update drivers in Windows using Device Manager to update or reinstall a driver.

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

Chat or receive a call back from a technical support expert: If you have a Microsoft 365 Basic, Microsoft 365 Personal, or Microsoft 365 Family subscription, get questions answered from anywhere via chat or request to receive a call back from one of our technical support experts.

Most email apps like Outlook are able to automatically configure email server settings. If you need server settings or help finding your server settings, click on one of the links below: Server settings for Hotmail, Outlook.com or Microsoft 365 for business email accounts. Find your Exchange ActiveSync mailbox server settings.

If you receive a phone call claiming to be from Microsoft, or see a pop-up window on your PC with a fake warning message and a phone number to call and get your “issue” fixed, it’s better to be safe and not click any links or provide any personal information.

Hotmail または Outlook.com のパスワードは、Microsoft アカウントのパスワードと同じものです。. サインインできるものの Outlook.com で問題がある場合は、 [サービス状態] を確認します。. 状態が緑色ではない場合は、サービスが正常に動作するようになるまで待っ ...