Does a windows update limit connectivity as a protective measure?

Does a windows update limit connectivity as a protective measure?

"On an initial first install of Windows of any kind happens and you have to install the 92 updates or however many there are.
Doesn't windows somehow protect the machine while that happens?
(I seem to remember a windows dialog asking if you want to allow that, not another program)
That is what makes me think this is possibly part of updates."