Windows Defender is a built-in antivirus and security tool in Windows 11. It helps protect your computer from malware and other threats. One feature it offers is Limited Periodic Scanning, which periodically scans your system even if you use another antivirus program. However, some users may want to turn this feature off for various reasons.
Disabling Limited Periodic Scanning can help avoid potential conflicts with other antivirus software. It may also improve system performance slightly by reducing background scans. If you decide to turn off this feature, follow the simple steps below.
This guide will walk you through the process of turning off Windows Defender Limited Periodic Scanning in Windows 11. The instructions are easy to follow, even if you are new to Windows settings.
By the end, you will understand how to disable this feature and why it might be beneficial for your setup.
Quick Note Before You Begin
- Check if Limited Periodic Scanning is enabled: This feature typically activates when you have a third-party antivirus installed alongside Windows Defender.
- Make sure you have administrator rights: You will need admin access to change security settings.
- Understand the risks: Turning off periodic scanning means Windows Defender won’t provide extra background protection, so ensure your main antivirus is reliable.
- Backup important data: It’s always good practice to back up your files before changing system settings.
Step-by-Step Guide to Turn Off Limited Periodic Scanning
Step 1: Open Windows Security
First, click the Start button or press the Windows key on your keyboard. Type Windows Security into the search bar and select the app from the results. This opens the main security dashboard where you can control your antivirus settings.
Step 2: Navigate to Virus & Threat Protection Settings
Inside Windows Security, look for the menu on the left side and click on Virus & threat protection. This section manages your antivirus features and scans.
Next, find and click on Manage settings under the Virus & threat protection settings heading. This will open detailed options related to Windows Defender.
Step 3: Locate and Turn Off Limited Periodic Scanning
Scroll down to find the Limited Periodic Scanning option. If this feature is currently enabled, you will see a toggle switch turned on.
Click the toggle to switch it Off. This disables Windows Defender from performing periodic scans when another antivirus program is active.
Step 4: Confirm the Change
After turning off the toggle, you can close Windows Security. If you want to double-check, simply reopen the app and verify that the Limited Periodic Scanning setting remains off.
Why Is It Important to Turn Off Limited Periodic Scanning?
When you have another antivirus installed, Limited Periodic Scanning can cause duplicated scans, which might slow down your PC. Disabling it prevents unnecessary resource use. It also reduces the chance of your antivirus programs conflicting, which can sometimes cause false alerts or scanning issues.
Alternative Method: Using PowerShell
If you prefer using command-line tools or want an alternative way to disable this feature, you can use PowerShell with administrator privileges.
- Press
Windows + Xand select Windows Terminal (Admin) or PowerShell (Admin). - In the window, type the following command and press Enter:
Set-MpPreference -DisableScanningNetworkFiles 1Note: This command disables scanning of network files, which is related but not exactly the same as Limited Periodic Scanning. For precise control, the Windows Security app is recommended.
FAQs About Turning Off Windows Defender Limited Periodic Scanning
Q: Will turning off Limited Periodic Scanning make my PC less secure?
A: It reduces the additional layer of scanning Windows Defender provides alongside your main antivirus. If your primary antivirus is reliable, this is usually safe.
Q: Can I turn Limited Periodic Scanning back on later?
A: Yes, you can enable it anytime through Windows Security settings.
Q: What if I don’t see the Limited Periodic Scanning option?
A: This feature only appears if you have a third-party antivirus installed. If you only use Windows Defender, it won’t show up.
Q: Does turning this off affect Windows Defender’s main protection?
A: No. Windows Defender will continue to protect your system unless you disable it completely.
When Nothing Works
If you cannot disable Limited Periodic Scanning through the methods above, try the following:
- Ensure your Windows 11 is up to date via Settings > Windows Update.
- Restart your computer and try again.
- Run Windows Security Troubleshooter from Settings > System > Troubleshoot > Other troubleshooters.
- Consult the official Microsoft support page for Windows Security for advanced help: Microsoft Windows Security Support.
Conclusion
Disabling Windows Defender Limited Periodic Scanning in Windows 11 is straightforward and helps avoid redundant antivirus scans. By following the simple steps in Windows Security, you can easily turn off this feature and maintain smooth system performance. Remember to keep your primary antivirus updated and active for the best protection. If issues arise, alternative methods and official support resources are available to assist you.