Even though it's undocumented, Windows can reportedly return ERROR_FILE_NOT_FOUND from WSAErrorCode. We should handle this case, see additional info URL.

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There's no existing public thread on this issue, so head over to AnswerHub just mention UE-23301 in the post.

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Won't Fix
Affects Versions4.9
CreatedNov 12, 2015
ResolvedFeb 14, 2017
UpdatedMar 28, 2017