If you suspect that your device may have malware you should have Microsoft Defender run a scan. Here's how to do that on Windows, Mac, or Android.

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 ...

Find out what to do when you receive a “Call us overprotective” message when signing in to Xbox.com.

From your PC, you can connect to select Android, Samsung, HONOR, OPPO, ASUS, and vivo devices with the Link to Windows app that's either preinstalled on your device or that you can download from the Google Play or Samsung Galaxy Store.

Learn how to add all your different accounts to the Microsoft Authenticator app.

Cross-device copy and paste is supported on Surface Duo and Android devices that are running One UI version 2.1 or above or select HONOR devices (1.22036.14.0 or later) or OPPO devices (1.23093.0 or later) or select ASUS or select vivo devices.

How do I check if I’m running the latest version of Phone Link?

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.

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 ...

Microsoft prioritizes account security and works to prevent people from signing in without your permission. When we notice a sign-in attempt from a new location or device, we help protect the account by sending you an email message and an SMS alert. If your phone number or email changes, it's important to promptly update the security contact info on the Security basics page so we can work with ...