Windows Defender is Microsoft’s built-in antivirus that runs by default in Windows 10 and 11. While it provides security, some users prefer disabling it—especially if they use a third-party antivirus or need to bypass certain restrictions for software installation.
In this guide, we’ll show you two simple methods to permanently disable Windows Defender, including Real-Time Protection, ensuring it doesn’t turn back on automatically.

Why Disable Windows Defender?
- Slows down downloads & installations (may block legitimate files).
- Conflicts with third-party antivirus software.
- Unnecessary for users who manually manage security.
⚠️ Warning: Disabling Windows Defender reduces security. Only proceed if you have an alternative antivirus or understand the risks.
Method 1: Disable Windows Defender via Security Settings
Step 1: Open Windows Security
- Press Win + I to open Settings.
- Go to Privacy & Security > Windows Security.
- Click “Open Windows Security”.
Step 2: Turn Off Real-Time Protection
- Go to Virus & Threat Protection.
- Under “Virus & Threat Protection Settings”, click “Manage Settings”.
- Disable the following:
- Real-time protection
- Cloud-delivered protection
- Automatic sample submission
- If prompted, confirm with “Yes”.
Step 3: Disable Tamper Protection (Optional)
- Go to “Virus & Threat Protection” > “Manage Settings”.
- Scroll down and turn off “Tamper Protection” (this prevents Defender from re-enabling itself).
Method 2: Disable Windows Defender via Task Scheduler (Permanent Solution)
Windows Defender may reactivate after a reboot. To permanently disable it, we’ll use Task Scheduler.
Step 1: Open Task Scheduler
- Press Win + S, type “Task Scheduler”, and open it.
- Navigate to:
Task Scheduler Library > Microsoft > Windows > Windows Defender
Step 2: Disable Scheduled Scans
- Right-click each task (e.g., “Windows Defender Scheduled Scan”).
- Select “Disable”.
- Repeat for:
- “Windows Defender Cleanup”
- “Windows Defender Verification”
Step 3: Prevent Automatic Re-enabling
- Go back to Windows Security Settings (Method 1).
- Ensure Real-Time Protection remains off.
Final Step: Restart Your PC
After applying these changes, restart your computer to ensure Windows Defender stays disabled.
Alternative: Use Group Policy (For Windows Pro/Enterprise Users)
If you have Windows Pro or Enterprise, you can disable Defender via Group Policy Editor:
- Press Win + R, type
gpedit.msc, and press Enter. - Navigate to:
Computer Configuration > Administrative Templates > Windows Components > Microsoft Defender Antivirus
- Double-click “Turn off Microsoft Defender Antivirus” and set it to Enabled.
Conclusion
By following these steps, you can permanently disable Windows Defender and prevent it from reactivating. However, remember:
🔹 Only disable Defender if you have another antivirus.
🔹 Re-enable it if you notice security risks.
For more security tips, visit Microsoft’s official security page.
Tags:
Windows Defender, Disable Antivirus, Windows 10, Windows 11, Real-Time Protection
Hashtags:
#WindowsDefender #DisableAntivirus #WindowsTips #PCSecurity #TechGuide
Disclaimer:
Disabling Windows Defender may expose your system to malware. Proceed at your own risk. Ensure you have an alternative security solution before disabling Defender. This guide is for educational purposes only.