Criminals use phishing attacks, malware, and tech support scams to try and steal your information and your money. Learn how to stop them.

Summary This article explains how to activate Windows online or offline using an Installation ID and Confirmation ID across Windows 11, Windows 10, Windows 8.1/8, Windows 7, Windows Vista, and Windows XP. It explains online activation steps, offline activation through the Product Activation Portal, and three offline workflows: Activation page, SLMGR command prompt, and SLUI command prompt. It ...

在设置您的 Microsoft 帐户时，您提供了电子邮件地址和密码来保护您的帐户。 如果您使用了非 Microsoft 电子邮件地址，我们将通过向您发送包含验证说明的电子邮件，请求您验证您有权访问该电子邮件地址。 如果在首次设置帐户时跳过此步骤，您需要执行此操作才能登录。

Find answers to FAQs about denial of service (DoS) and distributed denial of service (DDoS) attacks when you're using the XBOX network on your XBOX console.

A popular tactic of criminals is the "fake order" scam. The way it works is that you get a message, usually in email or text, that appears to be a routine confirmation for an order. Of course, you never ordered whatever product or service it's confirming. The message looks common enough, and it says that money will be charged to your credit card or withdrawn from your bank account for the ...

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

Learn how to identify and open encrypted and protected emails no matter what email client you're using.

Provides information for avoiding and reporting Microsoft technical support scams.

Learn how to create installation media for installing or reinstalling Windows.

Signing your email messages with a digital ID helps to prove your identity and prevent message tampering.