I have a weird problem that only recently started happening. My computer (Windows 7 64 bit) uses a (Squid) proxy to access the Internet. After a while, I get an error message that it can't connect to the proxy. If I disable then enable the network card, the computer works fine again and stops working after a few minutes of browsing. I have several Windows 7 machines at home and all the machines that use the proxy have this problem. The machines that do not use the proxy, work fine. I know it's not a problem with the proxy because I built the proxy myself and I haven't updated it recently. Restarting the proxy does not fix the problem. I've updated my network card driver, but that doesn't help either. This problem seems to have happened after a recent Windows 7 update, but I can't pinpoint which update. Can someone help me to fix this problem with Windows 7?

Hi, You may boot the computer with Safe Mode with Networking to check whether the other software cause this issue. In addition, please check the following. http://support.microsoft.com/kb/934430 Also, because this proxy server is based on Linux, So we cannot test it. Thanks for your understanding.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.