Windows Defender Keeps Freezing: Fix 2026
## Direct Answer
To fix Windows Defender freezing, try restarting the Windows Defender service, updating Windows, and checking for malware. If the issue persists, reset Windows Defender or seek further assistance.
## Step-by-Step Guide
1. **Restart Windows Defender Service**: Press the Windows key + R, type `services.msc`, and press Enter. Find the Windows Defender Service, right-click it, and select Restart.
2. **Update Windows**: Go to Settings > Update & Security > Windows Update, and click Check for updates.
3. **Run a Full Scan**: Open Windows Defender, click on Virus & threat protection, and select Scan options. Choose Full scan and click Scan now.
4. **Reset Windows Defender**: Go to Settings > Update & Security > Windows Security > Virus & threat protection > Manage settings, and toggle off Tamper Protection. Then, go to the Registry Editor (Regedit), navigate to `HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender`, and delete the Windows Defender key.
5. **Check for Malware**: Run a scan with a reputable antivirus software to detect and remove any malware.
## FAQ
* **Q: Why does Windows Defender keep freezing?**
A: Windows Defender may freeze due to malware, outdated software, or conflicts with other programs.
* **Q: Will resetting Windows Defender affect my settings?**
A: Yes, resetting Windows Defender will restore its default settings.
* **Q: Can I use a third-party antivirus software with Windows Defender?**
A: Yes, but ensure the third-party software is compatible with Windows Defender to avoid conflicts.
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