18. April 2008 17:02
I regularly have some clients with network problems. Using this article I solved a lot of problems. The article How to troubleshoot TCP/IP connectivity with Windows XP describes a lot of useful tools to determine where the network problem exists.
If you suspect problems with the Tcp/IP stack. You can use the article on TechNet: Reset the Internet Protocol (TCP / IP) stack in windows XP. Because the TCP/IP stack is considered a core component of the Windows XP operating system, you cannot remove it. You need to follow the instructions given in the article. Being...
netsh int ip reset c:\resetlog.txt
4. April 2008 01:01
When i installed windows Vista, Live Messenger (and various other applications) where not working properly. They could not connect to the internet.
Using the Internet Connectivity Evaluation Tool might help detecting any problems at home networks. It did for me. I found out that my router is not supporting "Universal Plug and Play" (UPnP).
A long story short:
Apparently the problem is the TCP auto tuning feature of Windows Vista.
On technet I found this: "Network connectivity may fail when you try to use Windows Vista behind a firewall device". It helped.
Although everything is working for now, our router is still not "up-to-date". I'm consider buying a new router.