Windows Defender blocking Flight Reader installer download

Although the Flight Reader installers are signed with a digital certificate, Microsoft Defender often blocks newly released installers from being downloaded on Windows. This issue is commonly encountered when using the Microsoft Edge web browser to download Flight Reader.

Microsoft Defender flags a file as “not commonly downloaded” to help protect users from potentially harmful files. This happens because the file is new, uncommon, or doesn’t have a known reputation with Microsoft Defender’s systems. It doesn’t necessarily mean the file is unsafe—it simply means it hasn’t been downloaded enough times by other people to be recognized as trusted.

Follow these steps to work around this issue:

  1. Click the “See more” link in the “isn’t commonly downloaded” notification displayed at the top right of Microsoft Edge.



  2. Click “…” to open the menu and select “Keep”.



  3. Click “Keep anyway” to confirm you trust the Flight Reader installer download.



Note: All of the Flight Reader installers are signed with the same digital certificate from “Singer’s Creations”. Any file signed with that certificate is safe to download.

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You do get this message when downloading it from Crome as well (Windows defender reacting then as well). I have seen different ways of this being displayed, but the end game is to confirm that you want to allow the file.

In addition to this the file may also be quarantined by Norton Internet security, You then have to go to the quarantine to put it back.

Are you referring to instances where a file is detected as a false positive, or is Norton also quarantining files simply because they are not “commonly downloaded”?

I think so. I just know what happens, so I go into the quarantine and restore it.

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Even when different files are signed with the same digital signature, and that signature has never been associated with a legitimate positive detection, some security software still flags the trusted signer as potentially unsafe. I guess this is the current state of security software.

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