No Network connectivity - TCP Autotuning in Windows Vista

by Damiaan Peeters 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.

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