resetting TCP/IP network stack

http://www.zimbio.com/Windows+Vista/articles/43/Reinstall+Reset+TCP+IP+Internet+Protocol+Windows

backup the registry!

netsh int ip reset [ c:\tcp_stack_reset ]

http://geekswithblogs.net/mattcampbell/archive/2007/09/30/Resetting-your-whole-IP-stack-in-Vista.aspx

• Go to the Start Menu, type cmd and right click or (Ctrl + Shift and hit Enter), and select "Run As Administrator"
• Type the following commands, each followed by pressing enter.

• ipconfig /flushdns
• nbtstat -R
• nbtstat -RR
• netsh int reset all
• netsh int ip reset
• netsh winsock reset

Or another helpful command:

• netsh interface tcp set global autotuninglevel=disabled

Hope this might solve any problems you might have with Vista's new networking stack.


\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa

and the Key is "LmCompatibilityLevel" - Change the default value 3 to 1 then reboot.