Hello Guys! For a few weeks now I had the same problem... Luckily I found this forum... I have a vaio tt27gd, I used W7 for several months. In July I installed McAfee firewall,it worked fine till the end of august. I tried several of your solutions, in the end to the suggestion of uninstalling Norton I uninstalled my McAfee firewall. It worked! My internet connection is alive again! I hope it will be helpful for some of you too... Good luck!

Hello, as I see, the problem is with McAfee firewall. Please contact McAfee Technical Support for assistance or ask in their forums. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified IT Professional: Enterprise Administrator Microsoft Certified IT Professional: Server Administrator

Please change thread type to Discussion, thanks!Kunal D Mehta - a Windows Server Enthusiast | My first TechNet Wiki Article

Sometimes the Internet connection or network related problem is caused by faulty Winsock catalog after installing McAfee or other security related software, and by resetting Winsock catalog as show here could solve the problem. Hope this helps.