Windows Defender High CPU Usage Fix 2026
## Direct Answer
To fix Windows Defender high CPU usage in 2026, try the following:
1. Open Windows Security,
2. Go to Virus & threat protection,
3. Click on Manage settings,
4. Toggle off the ‘Real-time protection’ and ‘Cloud-delivered protection’ options,
5. Restart your computer,
6. Then, toggle the options back on.
## Step-by-Step Guide
Here’s a detailed guide to fix Windows Defender high CPU usage:
1. **Open Windows Security**: Search for ‘Windows Security’ in the Start menu and open it.
2. **Virus & Threat Protection**: Click on ‘Virus & threat protection’ from the left panel.
3. **Manage Settings**: Click on ‘Manage settings’ under the ‘Virus & threat protection options’ section.
4. **Disable Real-Time Protection**: Toggle off the ‘Real-time protection’ option.
5. **Disable Cloud-Delivered Protection**: Toggle off the ‘Cloud-delivered protection’ option.
6. **Restart Your Computer**: Restart your computer to apply the changes.
7. **Re-Enable Protection**: After restarting, go back to the ‘Manage settings’ page and toggle on the ‘Real-time protection’ and ‘Cloud-delivered protection’ options.
## FAQ
### Q: Why is Windows Defender causing high CPU usage?
A: Windows Defender may cause high CPU usage due to various reasons such as outdated definitions, conflicts with other antivirus software, or malware infections.
### Q: Will disabling Windows Defender leave my computer vulnerable?
A: Temporarily disabling Windows Defender may leave your computer vulnerable to threats. However, re-enabling it after restarting should resolve the issue.
### Q: Can I use other antivirus software with Windows Defender?
A: Yes, you can use other antivirus software with Windows Defender. However, it’s recommended to disable Windows Defender to avoid conflicts and performance issues.
### Q: How often should I update Windows Defender?
A: Windows Defender updates automatically, but you can also manually check for updates by going to the ‘Virus & threat protection’ section in Windows Security.
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