Errors CAA2000B, 4usqa, and 49dvs when trying to sign in to classic Outlook and Outlook for Mac

A phishing email is an email that appears legitimate but is actually an attempt to get your personal information or steal your money. Some deceptive emails appear to be from a safe sender but, in fact, have a "spoofed" source address to fool you. Here are some ways to deal with phishing and spoofing scams in Outlook.com. Spoof intelligence in Exchange Online Protection helps prevent phishing ...

Having trouble connecting to your email from Outlook on your desktop? Follow these steps to let Outlook diagnose and fix errors in your Outlook mail profile that might be causing the issue. Repair a profile in Outlook In Outlook, choose File. Choose Account Settings > Account Settings. On the Email tab, choose your account (profile), and then choose Repair.

Learn how to manage your Microsoft account security info and troubleshoot verification code issues.

Whenever you sign in to your Microsoft account, you may also get sign-in approval notifications in the Outlook mobile app. You will see sign-in requests appear either on the lock screen or in the Outlook mobile app. You'll also be able to get one-time passcodes, which you can copy/paste into other sign-in screens.

如果我的代码来自其他区域，该怎么办？ 某些数字代码适用于可能与帐户上的区域设置不匹配的特定国家/地区。 如果你的帐户与你的物理区域匹配，并且你的代码是从你所在地区的零售商处购买的，请确保设备上的区域也与你的物理位置匹配。 若要从 Xbox 主机执行此作，请执行以下作：

Get details on how to add or hide your email address and Rewards points balance from your Xbox home screen.

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

A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This key, which is a 48-digit number, is used to regain access to the drive.

Microsoft Authenticator helps you sign in to your accounts if you've forgotten your password, use two-step verification or multi-factor authentication, or have gone passwordless on your account.