Help protect my PC with Microsoft Defender Offline
Windows 11 Windows 10 Windows 8.1 Windows 7. Microsoft Defender Offline is a powerful offline scanning tool that runs from a trusted environment, without starting your operating system. When should I use Microsoft Defender Offline? Run Microsoft Defender Offline if:
Installing Microsoft Defender - Microsoft Support
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. Important: This article is about the Microsoft Defender app that ...
Applies To:
Microsoft Defender on Android, Microsoft Defender on iOS, Microsoft Defender on Mac, Microsoft Defender on Windows
Automatically fix Windows security issues - Microsoft Support
Download. What it fixes. Checks the following Windows security features and enables them if needed. Phishing Filter or Smartscreen Filter. User Account Control (UAC) Data Execution Prevention (DEP) Windows Firewall. Antivirus protection status and updates. Runs on. Windows 7. Windows 8.1. Windows 10. See also. Stay protected with Windows Security.
Turn Windows Security on or off - Microsoft Support
When you get a new device and start up Windows 10 for the first time, the antivirus protection that comes installed with the device is your default security app.
Protect your PC from ransomware - Microsoft Support
Ransomware is malware that encrypts your files or stops you from using your computer until you pay money (a ransom) for them to be unlocked. If your computer is connected to a network the ransomware may also spread to other computers or storage devices on the network.
Getting started with Microsoft Defender - Microsoft Support
Microsoft Defender is a security app that helps people and families stay safer online with malware protection, web protection, real-time security notifications, and security tips. Microsoft Defender is included in a Microsoft 365 Family or Personal subscription and works on your phone (Android or iOS), PC, and Mac.
Applies To:
Microsoft Defender on Android, Microsoft Defender on iOS, Microsoft Defender on Mac, Microsoft Defender on Windows, Microsoft Defender Online
Protect your PC from potentially unwanted applications
Windows 10. Potentially unwanted applications (PUA) are a category of software that can cause your machine to run slowly, display unexpected ads, or at worst, install other software which may be more harmful or annoying. Windows Security has reputation-based protection that can help protect your PC from potentially unwanted applications.
App & browser control in Windows Security - Microsoft Support
App & browser control in Windows Security provides the settings for Microsoft Defender SmartScreen, which helps protect your device from potentially dangerous apps, files, websites, and downloads. The settings on the App & browser control page let you: Block unrecognized apps, files, malicious sites, downloads, and web content.
Getting started with web protection in Microsoft Defender
Microsoft Defender's web protection helps protect you against malicious sites that are being used for phishing or spreading malware. Web protection is currently available on Windows, iOS, and Android.
Applies To:
Microsoft Defender on Android, Microsoft Defender on iOS, Microsoft Defender on Windows
Add an exclusion to Windows Security - Microsoft Support
Security Windows 11 Windows 10. If you trust a file, file type, folder, or a process that Windows Security has detected as malicious, you can stop Windows Security from alerting you or blocking the program by adding the file to the exclusions list. Caution: Only do this for files that you're confident are safe.