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From:	"Bill McCormick" <wpmccormick AT covad DOT net>
To:	<cygwin AT cygwin DOT com>
Subject:	RE: Erroneous complaint about being unable to run emacs
Date:	Sun, 27 Jul 2003 10:35:04 -0500
Message-ID:	<NDBBLLFMLFMANIDPNADCIEHFFCAA.wpmccormick@covad.net>
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Martin Cohen Wrote:
> I recently started a thread here with the following
> message:
>
> >I installed cygwin in my D: partition under Win XP.
> >Running startx results in the usual screen and the
> >3 windows. However, when I type in my usual
> >"emacs . &", I get this
> >
> >emacs: cannot connect to X server :0.0.
> >Check the DISPLAY evironment variable or use '-d'.
> >Also use the 'xhost' program to verify that it is set
> >to permit connections from your machine.
> >
> >When I enter "xhost +", I get this
> >
> >xhost: unable to open display ":0.0"
>
> The reason for this is that my McAfee firewall was
> set (due to my mistake) to not allow emacs to access the
> internat. This caused the failure above.
>
> I do not know why emacs (and other applications, such as
> xclock) need to access the internet, but allowing them to
> allows them to run.

Emacs (and must programs X programs) use TCP/IP sockets to communicate to
Xserver.

>
> My apologies for wasting the time of those who generously
> tried to help me.
>

Not at all.

Bill
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