This appears to be a standard problem as I have seen thousands of posts on many forums regarding networking issues with Windows 7, but no resolution. My company purchased 18 notebooks with Windows 7 Pro installed. After I set them up initially, they worked fine on our network. Since then, one by one, each computer has become unable to connect to the Internet or our terminal servers. Some forums speculate that a Windows 7 update is responsible for this problem. Network status shows that the machines are connected to the domain, and I can ping other computers from the Windows 7 machines. IPCONFIG shows properly configured IP addresses. At one of our sites, all of the Windows 7 Pro machines stopped connecting to the Internet and terminal servers simultaneously while the Windows XP machines had no connectivity issues. Interestingly, I connected these machines to an older network switch than they were previously connected to and the networking problems stopped. On other occasions, I have had to re-install Windows 7 Pro. Presently, I have one notebook on my desk that has been returned for the same reason and it has exactly the same issues. I will probably roll all of these machines back to Windows XP (last known good OS) and wait for Windows 7 service pack 3 before I will feel confident about Windows 7. In the meantime, if anyone has any good information regarding the Windows 7 networking issues, it would be greatly appreciated to receive some free support. By the way, Windows 7 has cost our non-profit agency over $800.00 in external hardware that is only compatible with previous Windows version.

Hi CagedHead, The network connection issues could be caused by many things, like the firewall, the internet stability, the server and etc. When your Windows 7 clients lose connection, are there any related events in the Event Viewer? What's kind of server you have? Are there any related domain group policy settings? I suggest you test on my problematic client, temporarily turn off the firewall/anti-virus application, enter into the Safe Mode with networking to check if it will lose the connection. Also perform a Clean Boot in case of any third-party services conflicts. Regards, MiyaThis posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.