Windows Defender: Threat detected
This appears to be a security-related message. Exercise caution.
Safety Warning
This message is commonly associated with scams or phishing attempts.
Do Not:
- Click any links in the message
- Call any phone numbers displayed
- Enter personal or financial information
Safe Actions:
- Close the popup or browser tab immediately
- Navigate directly to official websites if concerned
- Run a trusted antivirus scan on your device
Seeing "Windows Defender: Threat detected"? This type of message is commonly used in scams or phishing attempts. Before taking any action, read the safety guidance below carefully.
What This Error Means
Windows Defender found a potentially harmful file.
Reported across multiple operating systems and devices.
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Common Causes
- Downloaded malicious file
- Infected email attachment
- Malware installed
How to Fix
- Allow Defender to quarantine the threat
- Run full system scan
- Delete suspicious files
Last reviewed: March 2026 How we review solutions
Optional follow-up
Some users ask whether saving fixes for recurring errors would be useful when the same issue appears again.
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Frequently Asked Questions
Is this a false positive?
Sometimes, especially with legitimate software like game mods.
Should I allow the file?
Only if you are 100% certain it is safe from a trusted source.
Related Resources
Also Known As
- Error message
- System error
- Technical error
- Error code
Common Search Variations
- "how to fix this error"
- "what does this error mean"
- "error solution"
- "troubleshooting error"
- "error fix guide"
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