Internet won't work because of Avast

[hanasadako]

When i downloaded Avast my internet won't work. When i disabled avast, the internet connection worked well. Why is that?

[FreewheelinFrank]

Probably because of your firewall, or another security suite you have installed, of had installed in the past.

What firewall do you have?

What anti-virus programs or security suites have you had installed in the past?

(Symantec is often the culprit- even after uninstalling it causes problems.)

[DavidR]

As FWF asked, what is your firewall ?
Does it allow ashWebSv.exe internet access ?
- If it does delete the entry for it and reconnect to the internet, this should force the firewall to ask permission again.

As a temporary workaround, rather than disable avast, just Stop the Web Shield so that you at least have the fall back protection of the Standard Shield.

[samuelsjs]

I have same problem, on installing avast on pc running vista - no internet unless I disable resident protection. Other antivirus was Mcafee.

[DavidR]

Then also answer the other questions on firewall ?

Did you try checking if ashWebSv.exe was allowed, as suggested ?

You didn't say which McAfee version, so here are the various tools:
- McAfee has an uninstall tool that you could run to ensure any possible remnants are removed.
http://download.mcafee.com/products/licensed/cust_support_patches/VSCleanupTool.exe Or http://majorgeeks.com/McAfee_Consumer_Product_Removal_Tool_d5420.html
 
2007 version - http://download.mcafee.com/products/licensed/cust_support_patches/MCPR.exe
 
Also see - How do I uninstall SecurityCenter? http://ts.mcafeehelp.com/faq3.asp?docid=71525