Downloads not working, but have odd network setup

I'm using a 'Net-to-plug' network setup (uses the house's electrical wiring
as cabling) and running a proxy on the main computer to proxy the connection
to the internet.
I'm using Analogue X Proxy for that, but can only use the standard ports of
http (80), https(443) and ftp(21).

My question is, does Microsoft updates use ports other than these?

Josh,

The http ports you list are correct. Doubt any other http ports or
the ftp port you cite is used.

MowGreen [MVP]
===============
*-343-* FDNY
Never Forgotten
===============

Josh Coops wrote:

> I'm using a 'Net-to-plug' network setup (uses the house's electrical wiring
> as cabling) and running a proxy on the main computer to proxy the connection
> to the internet.
> I'm using Analogue X Proxy for that, but can only use the standard ports of
> http (80), https(443) and ftp(21).
>
> My question is, does Microsoft updates use ports other than these?