Protect your Android, iPhone, Mac, and Windows devices from threats by installing Microsoft Defender. Download Microsoft Defender on your devices either by: Scanning the following QR code Searching for Microsoft Defender in your app store Sharing with your devices, the following link: Copy link We encourage you to install Microsoft Defender on at least five devices per person. Ready to give it ...

If you think your Microsoft account has been hacked, find out how to secure your account and check for unauthorized activity.

Provides links to the uninstall tools and directions for many security programs.

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.

These attacks may render a device temporarily unable to connect to the internet. You can learn more about what to do in the case of a DoS or DDoS attack below. Important If you feel your personal safety is at risk, contact your local law enforcement immediately.

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

Learn how to report a player’s behaviour or content by using the Xbox app for mobile and Windows.

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 ...

A file in SharePoint, OneDrive, or Teams is blocked. What do you do? Read this article to learn why this is happening and steps you can take.

Learn more about the different ways that you're notified of an Xbox enforcement action and where you can get more info about it.