If you get an email from Microsoft account team and the email address domain is @accountprotection.microsoft.com, it is safe to trust the message and open it. Microsoft uses this domain to send email notifications about your Microsoft account. These notifications can include security codes for two-step verification and account update information, such as password changes. You can check the ...

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

Learn how to protect your Windows devices and personal data from viruses, malware, or malicious attacks.

Describes and provides links to several Microsoft security resource centers and tools that can help you protect your system from malware and from viruses.

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Microsoft Defender is a new security app that helps protect you and your family across all your devices; Windows, Android, Mac, and iOS.

If you can't sign into your Microsoft account, use the sign-in helper to identify the problem. How to use the Microsoft account sign-in helper 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. If it detects a problem with your account, we'll tell you what you need to do to solve the problem. If the tool ...

Learn how to recover a hacked or compromised account, what to do next, and how to prevent your account from being compromised in the future.

Learn how to use virus and threat protection options in Windows Security to scan your device for threats and view the results.