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More Information on AutoTuningLevel and the Vista TCP Window Scaling

Posted on October 5, 2007

I first introduced this issue in a previous post.  It turns out that this problem occurs if a network hardware device, such as a router, does not support TCP Window Scaling. TCP Window Scaling is a new Windows Vista feature. 

The TCP window scale option is an option to increase the TCP congestion window size above its maximum value of 65,536 bytes.

I also have found that this can resolve problems like slow file copy operations in Vista as well as momentary loss of Internet connectivity.

Here are a couple of knowledge base articles from Microsoft:

About JB

I've been a technologist for over 20 years, getting my start in IT with a large Fortune 100 international retailer in the 1990s. I love to talk about new technology, mobile devices, software development, photography, and the weather.  The opinions expressed on this blog are my own.

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