How to increase download speeds and Browsing in Windows Vista?

With Windows Vista you have noticed the slow speed internet. Web browsing and downloading speed is very slow as compared with the previous version of windows. You can open the same site in Windows XP and Server 2003 with the normal speed.
Follow the steps given to increase the Vista browsing speed:

The first step to go to the tab in Internet Explorer and turn off the TLS (Transport Layer Security) encryption option. Here to fix problem with some secure pages turn on the SSL 2.0 (Secure Socket Layer) feature and click Ok button to close it.

Follow the big problem to fix this:
In windows Vista, the TCP autotuning feature is enabled by default. Some web servers do not respond well to this feature, so it appears that some sites open with very slow speed. To use these features, you need to log in to your computer with administrative rights.

First, click the Start button and type CMD in Run option then press Enter.
In the Command Prompt, type the following command and press enter.
netsh interface tcp set global autotuninglevel = disabled
This command will disable the TCP autotuning feature. Now close the command Prompt and restart your computer after any changes to go into effect.
You can easily restore the settings by typing the following command in the Command Prompt.

netsh interface tcp set global autotuninglevel = normal
Now close the command Prompt and again restart your computer after any changes to go into effect.