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Protect Your Windows 11 with Microsoft Security

Richard
Written by
Richard
Jul 23, 2021 Updated Sep 15, 2026 3 min read
Protect Your Windows 11 with Microsoft Security
Protect Your Windows 11 with Microsoft Security

Microsoft Defender Antivirus is the built-in security tool in Windows 11 that shields your computer from viruses, spyware, and online threats. It runs quietly in the background from the moment you turn on your PC and updates itself automatically with the latest safety data from Microsoft.

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Windows Security acts as your main safety shield, checking files and apps for danger without slowing down your daily tasks. If you install a different antivirus program, Windows Security steps aside to stop conflicts and turns back on if you remove that software.

⚡ Quick Answer

Open Windows Security by searching for it in the taskbar . Ensure all security areas show green checkmarks for optimal protection. This built-in tool defends against viruses, malware, and other online threats.

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Login to Windows Security

Windows Security is the built-in app you use to check your Windows 11 security status and run antivirus scans. To open it, press the Win, type Windows Security in the search bar , and click the top result. The main screen shows a green checkmark if your computer is safe, or yellow and red warnings if something needs your attention.

Windows 11 Start menu showing Settings option
windows 11 start settings

The app shows you a quick status report. If you see a green checkmark, your computer is safe. Yellow means you should check for recommendations. Red means you need to take action immediately to fix a security issue.

Windows Security interface on Windows 11
windows 11 windows security
Windows Security dashboard displaying security status
windows 11 windows security dashboard
Windows Security glance dashboard overview
windows security glance dashboard
Windows 11 device showing healthy security status
windows 11 healthy device security

Security areas in Windows Security

  • Virus & threat protection: Monitors your files for viruses and runs scans.
  • Account protection: Manages your sign-in options like Windows Hello.
  • Firewall & network protection: Watches your internet connections for suspicious activity.
  • Apps & browser control: Uses SmartScreen to block dangerous websites and apps.
  • Device security: This includes Core Isolation and Memory Integrity. These features use hardware security to prevent malicious code from accessing your computer’s memory. Keep these turned on for the best protection.
  • Smart App Control: This is a modern security feature that blocks untrusted or potentially unwanted apps. It provides a vital layer of defense for Windows 11 users.
  • Device performance & health: Checks your system for updates and performance issues.
  • Family options: Helps you manage online safety for children.

Windows 11 security features are divided into seven main protection areas that manage everything from your firewall to sign-in options. Virus & threat protection handles malware scans, Account protection secures your Microsoft sign-ins, and Firewall & network protection watches your internet connection. Each section lets you change settings and fix security warnings in one place.

How to fix Windows Security apps

⚠️WarningIf the app stops working, you may need to reset it.

Follow this guide to fix it: %📂%LNK0%%

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How to schedule a scan in 🪟 Windows 11

Windows 11 security scans can be automated using Task Scheduler so your computer checks for viruses on a regular schedule without manual effort. To set this up, open Task Scheduler from the Start menu, go to the Task Scheduler Library, and navigate through Microsoft, Windows, and Windows Defender. Right-click Windows Defender Scheduled Scan and open its properties to choose your scan times.

Using Task Scheduler:

  1. Search for "Task Scheduler" in the search bar and open it.
  2. Go to Task Scheduler Library Microsoft Windows Windows Defender
  3. Right-click "Windows Defender Scheduled Scan" and select Properties.
  4. Go to the Triggers tab, click New, and set your preferred time.

Using PowerShell:

  1. Right-click the Start button and select Terminal (Admin).
  2. Type Set-MpPreference -ScanScheduleDay [DayOfWeek] and press Enter.
  3. Type Set-MpPreference -ScanScheduleTime [HH:MM] and press Enter to set the time.

Using the information above will keep your device secure. One important takeaway is that Windows Security is very capable, and most users do not need extra software. %%LNK1%%

Conclusion

  • Windows Security offers strong, built-in protection against modern threats.
  • Features like Smart App Control and Memory Integrity are essential for Windows 11 security.
  • Regularly checking your status ensures your device stays healthy.
  • Knowing these tools helps you stay safe while browsing the web.

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Tags: #Windows 11
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Richard

About the Author

Richard

Tech Writer, IT Professional

Richard, a writer for Geek Rewind, is a tech enthusiast who loves breaking down complex IT topics into simple, easy-to-understand ideas. With years of hands-on experience in system administration and enterprise IT operations, he’s developed a knack for offering practical tips and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.

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