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Reload this Page Windows Defender reports trojan in calibre-5.14.0

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Old 04-06-2021, 05:09 PM   #16
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It's not detecting anything on my end either.

The OP said they got the files from three different sources, the main site and alternates (fosshub and github). It's unlikely that all three of them were compromised.
It's possible that one of the alternates infected the other two copies.
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Old 04-06-2021, 05:16 PM   #17
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They're the same file.
Attached Thumbnails
Click image for larger version Name: 2021-04-06_181600.png Views: 130 Size: 19.5 KB ID: 186460  
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Old 04-06-2021, 05:30 PM   #18
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They're the same file.
The I have no idea how the OP got a false positive when nobody else in this thread with Windows Defender got such.
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Old 04-06-2021, 05:42 PM   #19
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IIRC - there was a spate of corrupt downloads a few years ago, one theory as to cause was that one of the major US based ISPs was caching and disdribuling corrupt copies.

The OP should cross-check the checksums of downloaded .msi against values available from the official download pages,

From here it appears there are about 25,000 people using calibre 5.14 on Windows. Many (most ?) would use Defender.

BR
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Old 04-07-2021, 09:24 AM   #20
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I got the files from:

https://calibre-ebook.com/download_windows
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Old 04-07-2021, 09:27 AM   #21
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Apparently, Windows Defender just updated their malware definitions. Now, scanning the download reports no malware.
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Old 04-07-2021, 09:38 AM   #22
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Apparently, Windows Defender just updated their malware definitions. Now, scanning the download reports no malware.
In other words, what everyone told from the start was true - false positive.
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Old 04-07-2021, 11:07 AM   #23
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In other words, what everyone told from the start was true - false positive.
The only thing I can think of is that @alb998 was not up-to-date with Windows Defender when he downloaded and installed Calibre 5.14 and it was an old definition that caused the problem.

I do see that there is a new definition released today and I've installed it.
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