Windows defender virus definition bug RRS feed

  • Question

  • I develop a plug-in for Outlook, and the installer is digitally signed using a recognized EV signing certificate. Within the last three or four days, Windows defender has started identifying the installer as Trojan:Win32/Spursint.F!cl . This is true of previously published versions of the installer that were not in the past identified as a virus. This leads me to believe that Microsoft updated the algorithm for identifying this virus and introduced a bug.

    Can somebody from Microsoft contact me so we can troubleshoot this bug? I'm sure I'm not the only one affected.

    Thank you,

    David Cohen


    I submitted my installation file here and Microsoft confirmed that it was not a virus. I was then able to download the installer with no virus warning. However, we append our release number to every single build, and after pushing a new build with a new version number, the new build is once again flagged as a virus.

    What can I do about this?

    • Edited by Raythien Tuesday, May 7, 2019 9:46 AM Update
    Tuesday, May 7, 2019 8:07 AM

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