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ScanWithAntiVirus reg key


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When downloading a quote PDF file, I receive a "Failed - Failed to scan for viruses" message.
I found that changing HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Attachments\ScanWithAntiVirus value from 3 to 1, I can download. If I put the value back to 3, it fails again.

Can anyone please tell me if changing this value could affect the functioning of ESET Internet Security that I have installed?

Or if I can delete or rename this ScanWithAntiVirus key which may only be linked to Windows Security?

Thank you

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1 hour ago, angelo_lopes said:


Here's Microsoft's reference article: https://support.microsoft.com/en-us/topic/information-about-the-attachment-manager-in-microsoft-windows-c48a4dcd-8de5-2af5-ee9b-cd795ae42738 . According the article the default policy is Off (1) or the key doesn't exist.

I just checked the registry key on my Win 10 22H2 installation with ESSP ver. 16 installed. The registry key doesn't exist. In fact, the Attachments sub-key doesn't exist. I therefore conclude that something else on your Win installation created these registry keys and set ScanWithAntiVirus to a  value to 3. Perhaps Outlook?

Edited by itman
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