Microsoft Edge displays "Open this file" or "Report file as unsafe" pop-up when editing a document


When opening a document for editing, the Microsoft Edge browser displays a pop-up warning about the file, either:

  • "Open this file"
  • "Report file as unsafe?"

Clicking the "Open" button, Edge will open a new tab and display the same pop-up in a loop.


This is caused by Microsoft Defender Smartscreen, designed to protect against phishing or malware websites and applications, and the downloading of potentially malicious files.


Contact your IT team to review the Microsoft Defender Smartscreen settings, and update as required to resolve the issue.

For more information on Microsoft Defender Smartscreen, refer to https://learn.microsoft.com/en-us/windows/security/threat-protection/microsoft-defender-smartscreen/microsoft-defender-smartscreen-overview 

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