I'm having what seems to me to be a very strange problem. A few hours ago, while using my desktop computer I stopped being able to access any sites except all google sites, and facebook. I tried Microsoft, twitter, CNN and ESPN
My desktop is a Dell XPS.
I started looking into the issue, lots of google searches with my laptop, and trying to be methodical about my testing.
I'm able to ping www.google.com, www.facebook.com, but not twitter.com, 126.96.36.199, or even my routers gateway address, even though that is what shows up when I run an ipconfig /all
The wifi in my house works just fine. Mac laptop, Android devices all connect with no issues. The router is a Cisco E4200, with both ipv4 and ipv6 enabled.
I finally discovered that I'm only able to ping the sites that send back an ipv6 address. I disabled the ipv6 on my router, when I did that my desktop no longer was able to connect to the internet. It shows the yellow exclamation point indicating limited connection. And I could longer connect to any website even google or facebook.
I attempted the following three commands, but even after multiple times and reboots, this did not help.
netsh winsock reset catalog
netsh int ipv4 reset reset.log hit
netsh int ipv6 reset reset.log hit
I ran my Panda Cloud Antivirus, and that said for better results connect to the internet. I have not attempted to download malwarebytes from my laptop and tranfer it over. I will attempt that if suggested.
Is there some type of virus that will disable ipv4? I don't see any unfamiliar processes in my task manager but I haven't done desktop support since WinXP.
Any advice or thoughts would be appreciated.
Edited by samahs, 03 April 2014 - 03:27 AM.