@ALMEIDA António
Thank you for posting in Microsoft Q&A forum.
I'm afraid there is no way to do this. We can not import downloaded updates to WSUS, we can only import metadata of update to WSUS. We can see more details about the error message when we import the update, it mentioned some updates may not have the needed applicability information (in other words, the logic that determines whether an update should be installed). These types of updates cannot be imported.
And we can see the documentation of this update, we can only get this update from Microsoft Update Catalog website.
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