We both use up-to-date Windows 10 (Mine is OS Build 1904.2728 Version 22H2), I just used Edge to download from Mega...
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And again, got no virus detected by Windows Defender.
I'm wondering if the others who saying they get the same notification are in a similar region of the world as where you are and if Windows Defender includes slightly different antivirus definitions in that region than in the United States.
But yes, when 69 other antivirus providers detect nothing but 1 does (that is known to throw up that Trojan as a false positive in the past - including for Steam games, VLC, privately made applications, etc) -- it would be a sign that it's an error.