In all current versions of Windows (XP, Vista, Windows 7), 20% of your internet connection bandwidth is reserved for Windows updates, when the updates are available. Especially in colleges, you don’t have enough bandwidth to allow this huge a chunk to be wasted!
You can in a few quick and simple steps regain this 20% bandwidth, or in effect increase your internet connection speed to 100*(100)/(100 – 20) = 125% of its current value, an increase of 25%.
However, you won’t see the increase in internet speed unless updates are available from Windows. There is a popular myth, even propounded by popular Tech-Blogs and forums that these versions of Windows reserve 20% of your network bandwidth all the time. That is a totally wrong claim. Windows Update only reserves this 20% when it is actually using the network. At other times, you do get 100% of the network bandwidth to use. Microsoft Support clearly states this here (link).
Go to Start Menu (windows button in taskbar)
Search for Run
Type in gpedit.msc and press enter (return)
Click on Local Computer Policy
Go to Computer Configuration > Administrative templates
Now Click on Network > QoS Packet Scheduler
In the Settings options, double-click on “Limit reservable bandwidth” option
In the window that opens up, select the disabled option on the left(third)
Now click on OK and close all the windows (which you had opened now)
You should experience a 25% increase in internet connection speed now!
(As mentioned above, this increase will be only at the time Windows Update is downloading data.)
Please share your experiences with us.