I believe it is just because they are new files and they haven't been cleared by the anti-virus database yet (or whatever the technical term is).
Allowing them to install is fine - I am pretty sure you can trust Graphisoft as the source.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
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