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joaohenriquem's avatar
joaohenriquem
Copper Contributor
Sep 26, 2023

All downloads performed, by any browser, have viruses Possible error in Microsoft documentation

Hello,   I encountered the following issue: every download I attempted through any web browser was showing a virus detected message, even though I had Kaspersky Endpoint Security as my antivirus, a...
configuration
device management
joaohenriquem's avatar
joaohenriquem
Copper Contributor
Sep 27, 2023
Yes, I performed this test, even with the antivirus disabled, it still continues to show the same error, preventing me from downloading.

I also updated my Windows and performed the updates notebook dell, but it didn't solve the issue.

The only solution was to change this key

Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments
Deleted's avatar
Deleted
Sep 27, 2023
Interesting, is there any policies shown in edge://policies? Also, tried turning of the Microsoft Defender Smartscreenin edge settings?
  • joaohenriquem's avatar
    joaohenriquem
    Copper Contributor
    Sep 28, 2023
    Yes, I completed all the steps from the link.
    https://support.microsoft.com/en-us/topic/information-about-the-attachment-manager-in-microsoft-windows-c48a4dcd-8de5-2af5-ee9b-cd795ae42738
    • Tech_Lance's avatar
      Tech_Lance
      Copper Contributor
      Nov 17, 2023

       

      We are having the same exact issue here. I have several computers that started doing this, earlier this week.  I even went so far as to remove the AV completely, I did the registry hack, I change the settings in attachment manager. Nothing seems to work.

      I have run virus scans, malware scans, changed browser settings, (although it appears to be all browsers are affected) 

      I am guessing it was a Windows update that may have caused the issue. I am at a total loss as to how to correct the issue. It is a big deal as we connect to a citrix platform, and it requires a download to run, every time we connect, but since it is blocked as a virus, with the same exact screen that is shown above, these computers cannot connect.

       

      • Ulli's avatar
        Ulli
        Copper Contributor
        Apr 02, 2025

        With Attachment Manager you can also mark some file types as low risk and you can play around with trusted zone for the source of the file.

        We have a similar issue where an SAP system puts an eml- file in the user temp folder. from there SAP tries to downlod it (file:///c:/....). Dont know it does this strange thing, but we have some eml-files that get blocked at the download with virus found.

        When I go the temp location I can open the eml in Outlook without warimg, but actively scanning it (we user Defender) shows the warning but doesnt quarantine it.

        event is 

        EUS:Win32/CustomEnterpriseNoAlertBlock!cl

        Its just sone PDFs in the eml. If sending the mail again to sap, nothimg is triggered.

        Scan Attachments from 3 ton1 in hklm solves the issue but this is no solution, as it bresks security.

        have opened a case with MS.

         

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