Microsoft Defender for Office 365 False Positives Block Google Search Links
Investigation underway after legitimate search results are mistakenly flagged as malicious
Key Takeaways
- Microsoft Defender for Office 365 is incorrectly blocking legitimate Google search links due to a false positive detection.
- The issue is affecting users globally and disrupting search-dependent workflows.
- Microsoft is investigating the root cause and working on a fix; no patch is currently available.
- Users should monitor official Microsoft security advisories for updates and avoid relying on unconfirmed workarounds.
Quick answers
- What happened?
- Microsoft is investigating reports that Defender for Office 365 is incorrectly blocking access to legitimate Google search links, treating them as malicious. The issue appears to be a false positive detection affecting users globally. Microsoft states it is working on a fix and recommends monitoring official security advisories.
- Which products are affected?
- Microsoft Defender for Office 365
- What should defenders do?
- Monitor official Microsoft security advisories for updates. No permanent fix available until Microsoft releases a patch or configuration update. Users experiencing the issue can temporarily disable real-time scanning or use alternative browsers, though this is not recommended for general use.
Microsoft is investigating an issue causing Microsoft Defender for Office 365 to mistakenly block access to legitimate Google search links. According to reports, the security software is flagging these links as malicious despite them being safe, preventing users from reaching intended search results. The issue is affecting users globally and appears to be a false positive detection rather than a vulnerability being exploited. Microsoft has not released a specific patch at this time and is actively investigating the root cause. The company recommends that affected users monitor official Microsoft security advisories for updates and workarounds. Google has not issued a separate statement regarding the interference. The disruption impacts productivity and workflows dependent on search functionality within the Microsoft Defender environment. No active exploitation of the false positive has been reported, and the issue is not associated with a CVE or malware variant.
Security Details
False positive detection by Microsoft Defender for Office 365 incorrectly flagging legitimate Google search links as malicious. No vulnerability or active exploitation reported. Issue under investigation.
Affected products
Microsoft Defender for Office 365
Mitigation
Monitor official Microsoft security advisories for updates. No permanent fix available until Microsoft releases a patch or configuration update. Users experiencing the issue can temporarily disable real-time scanning or use alternative browsers, though this is not recommended for general use.
Sources
BleepingComputer
Microsoft Defender flags legitimate Google search links as malicious
Sep 2, 2026 · 10:29
Original link
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