Windows⏱️ 2 min read📅 2026-05-29

How to Fix Threat service stopped Error – Threat service stopped Windows Defender Threat Service Stopped

Fix Windows Defender Threat Service Stopped error by resolving common causes and following step-by-step fixes.

Quick Answer: Restart your Windows Defender service or run the Windows Defender scan to resolve the issue.

The 'Windows Defender Threat Service Stopped' error can occur due to various reasons, including corrupted system files, malware infections, or incorrect Windows Defender settings. To fix this issue, you need to identify and address the underlying cause.

⚠️ Common Causes

  • Corrupted system files or registry entries
  • Malware infections, such as viruses or Trojans

🛠️ Step-by-Step Fixes

Method 1: Quick Fix

  1. Step 1: Press the Windows key + R to open the Run dialog box, type 'services.msc' and press Enter. Locate the 'Windows Defender Service' in the list of services.
  2. Step 2: Right-click on the 'Windows Defender Service' and select 'Start' or 'Restart' to start the service.

💡 Conclusion

If the quick fix doesn't work, you can try running a full scan with Windows Defender or reinstalling it. Additionally, ensure that your system is up-to-date and consider using a third-party antivirus software for added protection.

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❓ Frequently Asked Questions