Speed Up Torrent Downloads in Windows Vista

by Karthik on August 22, 2007 · 19 comments

I’ve noticed that BitTorrent downloads are not as fast on my friends PC as they were for me in XP. From what I could understand, this reduction in speed is due to difference in the AutoTuning function that Vista uses on the TCP/IP stack.But guess what the optimizer actually results in slower downloads. This affects BitTorrent and other programs that make use of threaded downloads.

If you are seeing slow downloads in BitTorrent too, you can disable the AutoTuning in Vista, this worked for my friend so i guess it should work for you too. To disable the Autotuning, follow these steps.

  • 1. Click on the Start menu and type cmd in the search box. But DO NOT hit Enter after typing cmd. Instead, hold down the Control and Shift keys, and hit Enter while still holding them down. This opens the command prompt with elevated privileges.
  • 2. In the command prompt, type netsh int tcp set global autotuninglevel=disable and then hit enter. It should respond with a prompt that says Ok.
  • 3. Its Windows, so you know that you need to reboot.

Making this change should speed up your BitTorrent downloads, but if it messes up something else as a result, you can always revert the change by following the same steps but replacing the command in the command prompt with netsh int tcp set global autotuninglevel=normal

Happy downloading! And Let Me Know if it works for you…

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{ 19 comments… read them below or add one }

Nantha August 29, 2007 at 10:36 pm

it comes as ‘netah’ is not recognised as an internal orexternal command


Karthik Kastury August 30, 2007 at 4:09 am

@Nantha : It is ‘netsh’ and ‘netah’


Seffiks September 21, 2007 at 12:18 am

it works to stop the network from randomly disconnecting while using torrents but does not speed them up ( speed has to do with yer connection speed and the amount of seeders that the torrent has..


Crystal October 11, 2007 at 6:00 am

Instead of disabling it set it to high and I seen a difference in the download speed.


Karthik Kastury October 11, 2007 at 7:00 pm

@Crystal : Thanks for the tip. I’ll try this out.


bob November 24, 2007 at 3:32 am

Thanks a lot dude, this is great, works for me,
;;emaxple,,, downloading at 5 kbps b4 the update and at 80kbps after update…



vineet March 14, 2008 at 2:46 am

have you tested if we turn it to high karthik, does it makes any difference or setting it to disable is the optimum solution, let me know!



Gaurav April 18, 2008 at 6:58 am

its shows no use .i have tried in in my vista but sppped as almost as before but sometimes for a while it gives 20-26kb/s not more than that .my usual speed is very very slow near about 1-3kb/s. i neeed your help to cop with this problem.


Dan May 21, 2008 at 7:57 am

Worked noticeably faster a few minutes after rebooting. Thanks…


devilmaster May 31, 2008 at 6:27 pm

nice 60kb down and up thx……………………………………….:) :)


Torrent_Addict July 17, 2008 at 11:30 pm

Works ok… but still can’t beat the tcp hack on XP. I think I’ll continue to download torrents with my other machine that has XP on it… LOL :P


Akash August 31, 2008 at 12:09 am

I did what u said but it says the command requires elevation,even after holding down contol and shift.Any ideas??


Dani September 29, 2008 at 12:50 pm

Worked for all of 3 sec. Then reverted back to a max speed of 1.3


Dan December 29, 2008 at 3:33 am

worked wonders for me, i was downloading at 50kbps, now going to at least, 3kbps idiots, its all crap nothing works.


neolaw March 30, 2009 at 10:21 am

eh it woks a little, goes up and down depending on if you have the window on screen. but all in all pretty good advice. 7/10


James May 28, 2009 at 4:40 am

Worked wonders for me — Was downloading at 14kbps now at 150kbps. Thankyou!!


baD June 11, 2009 at 2:47 am

Set global command failed on IPv4 The requested operation requires elevation :S not working For Me . i got vista ultimate build 6001


sam July 9, 2009 at 5:55 pm

works great for me! DL speed before 20kbs after 180!



arnold2908 February 14, 2010 at 12:17 pm

nothing work scam?


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