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I've seen this several times (mainly in VMs): although the machine is connected to the local network the OS (at the moment I am talking about Win 8.1 as guest in Virtualbox) notifies me:

Network: No internet access

I just want to know how Windows draws that conclusion.

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marked as duplicate by Ƭᴇcʜιᴇ007, Tog, Kevin Panko, Raystafarian, Garrett Mar 20 '14 at 6:12

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

When it can't talk to a specific Microsoft site. – Daniel R Hicks Mar 13 '14 at 21:07
up vote 5 down vote accepted

This article of SuperUser blog talks to the details how Windows does it.

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I was just posting that.... :) – Mike Naylor Mar 13 '14 at 21:08

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