Member Avatar for gj.vikram2

Hey , I have a problem.I use Windows 7 ultimate , and chrome as a default browser.I connect using a DSL modem.It says it is connected and I can only browse with firefox.IE , Chrome , Opera does not work.
I use Avast! anti-virus.

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Short summary and focused diagnostics for the symptom reported by : when Firefox can browse but Chrome, Internet Explorer and Opera cannot, the problem is usually at the system/network layer rather than in each browser. Firefox can use its own proxy/cert settings and sometimes bypasses Windows-level hooks, while Chrome/IE/Opera rely on WinINET and the Windows network stack. The suggestions from (proxy/IP checks), (AV interference), (modem firmware) and (third‑party security) are relevant; the steps below give concrete tests and fixes to narrow the root cause.

Recommended diagnostic sequence (in order):

  • Confirm real IP/DNS: run ipconfig /all and check for a 169.254.x.x address (APIPA = DHCP failure). Use nslookup google.com and ping 8.8.8.8 to separate DNS from general connectivity.
  • Bypass name resolution: browse to a site by IP (if the site serves plain HTTP) to see if DNS is the issue.
  • Check for a local proxy or interception: examine Internet Options > Connections > LAN settings for an unexpected proxy, and check Firefox’s Connection Settings to compare.
  • Look for local proxy listeners or LSP hooks with netstat -ano and netstat -abn to spot processes bound to 127.0.0.1:8080/3128, then match PIDs to processes in Task Manager.
  • Boot into Safe Mode with Networking or perform a clean boot (msconfig, disable non‑Microsoft services) to see if a third‑party service is the cause.

Network-reset commands (run an elevated command prompt and reboot afterwards):

netsh winsock reset
netsh int ip reset
ipconfig /flushdns
ipconfig /release
ipconfig /renew

Notes and targeted fixes: Avast’s HTTP/HTTPS scanning or “Web Shield” can inject a local proxy or certificate and break browsers that use the OS stack—temporarily disable Web Shield (or Avast entirely while offline) to test; if that fixes it, reinstall or adjust Avast’s SSL/HTTP scanning settings. If the reset above fails, check the hosts file (C:\Windows\System32\drivers\etc\hosts), scan with Malwarebytes, and test the modem by trying another device or using a mobile tether to rule out the DSL modem/ISP. Create a system restore point before making persistent changes.

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Member Avatar for Sell Online

Hey , I have a problem.I use Windows 7 ultimate , and chrome as a default browser.I connect using a DSL modem.It says it is connected and I can only browse with firefox.IE , Chrome , Opera does not work.
I use Avast! anti-virus.

is this a brand new PC? did you try to change any settings before this happend? or change routers perhaps?

please try clear your cache and cookies offline. try to temporarily disable the firewall then try to connect and access some sites on those other browsers. On IE check for proxy settings. for the rest uninstall and reinstalls the browsers. please check your IP if your recieving 169.xxx.xxx., possible software conflict. or a configuratioin issue.

hope this helps

Edited by Sell Online because: added additional comments
Member Avatar for kaninelupus

Not sure about Opera, but Google Chrome (in the case of some AV's) may require you to temp disable your Anti-Virus to perform a clean install. Once installed can re-enable Avast with no worries.

Let us know if things still not working and can dig deeper :)

Member Avatar for aarenaaron

you may have install Mcafee with advanced option ,otherwise i dont think so it happens

Member Avatar for puyol

i dont think is problem of virus just chake the manufacture of modem and try to use update software

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