problems updating

I have been getting an error message the last few days when Avast tries to update. I just checked and I have the july 29 version of the virus database. Any ideas why it doesnt update?

thank you

What is the exact error message?Do you have a firewall and has any settings changed there to block the updater?.Also has your update settings changed i.e whether its updating through a proxy or not?
me

I thought it might be the firewall but i closed it before trying to update manually and when I do that nothing happens .

Can you browse or send/receive email normally?
Everything is fine except avast?

Yes i can do everything else. When i get the message in the red scare saying that there was an error trying to update it say to click on it for more details but when I click nothing opens or happens.

than you

Do you use a firewall? which one?
Did you allow “avast*.setup” file to connect the Internet? This is necessary to update it…
When you click the red panel ‘nothing appears’… but really nothing? Not a message box saying the server is down?
There will be an IP number… Can you open a DOS windown and write:
ping XX.XXX.XXX.XXX
Can you connect?