Unfortunately the windows XP firewall has zero outbound protection, so that shouldn't be the problem.
Also see Cause for apparent Web Shield blocking internet connection, http://forum.avast.com/index.php?topic=57443.0.
Asyn's comment on other security related software, can also relate to previously installed. So if you had an anti-virus installed before avast then that may be an issue, remnants can interfere with the newly installed AV.
Have (or did) you another Anti-Virus installed in this system, if so what was it and how did you get rid of it ?
Hi!
No - I'm working with PC's around 10 years(exactly from Win 95)
And I've wrote - Clean Win XP installation with PC's drivers and
Noting else but Avast Home.
It is strange!
Because I've made many friends PC's installations, and now for my work PC - that strange issue.
I'll read that post you gave me.
And will try to fix the issue.
Thank's for now!
P.S The Post explaining issue with %SystemRoot%\Temp doesn't help
Same situation - No Internet.
If I disable WebShield - Internet has comming back.
If Enable Webshield - No Internet.