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Speed up bit torrent downloads in Vista

On my Vista install, I've noticed that BitTorrent downloads are not as fast as they were for me in XP. From what I can gather, this reduction in speed is due to difference in the AutoTuning function that Vista uses on the TCP/IP stack. 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 me. 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 line that says Ok.

3. It Windows, so you know naturally 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!
Rating: 76% positive, 94 total Votes
Categories: windows Vista BitTorrent speed
Added: on Aug 05, 2007 at 10:00 pm
Added By: an anonymous user
Searches: vista speed bittorrent download window

Comments on this Tip

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This worked for me - I'd been having the same problem since 'upgrading' from XP to Vista. This made a significant difference. Thank you.
– Added by an anonymous user on Aug 09, 2007 at 12:57 am
I tried the control+shift keys, but it doesn't open anything.
– Added by an anonymous user on Dec 01, 2007 at 2:21 pm
ur an idiot the dude above me haha lol thanks it worked
– Added by an anonymous user on Dec 16, 2007 at 5:23 am
I tried it and nothing made a difference. My speed is not bad but was hoping to make it faster. I will leave like it is for awhile but will eventually change back. i will keep all updated.
– Added by an anonymous user on Dec 17, 2007 at 11:23 am
Well I changed back cause made no difference. I did not leave negative or positive cause it effected to the good or bad. I hope it works for someone. Goodluck ppl
– Added by an anonymous user on Dec 17, 2007 at 12:42 pm
It worked fine with mine too.Thank you for this tip :) I hope you get money for that %)
– Added by an anonymous user on Dec 23, 2007 at 3:47 pm
yep, this method works, nice one.
– Added by an anonymous user on Dec 26, 2007 at 9:45 am
heya it works!!! thanks for the tip
– Added by an anonymous user on Dec 30, 2007 at 7:10 pm
O_O my torrents were downloading at around 30 kb/s and now they're maxing out at 900 kb/s. That is AMAZING. Thank you!
– Added by an anonymous user on Jan 27, 2008 at 9:33 pm
hi i did tried it and i got an error msg maybe i have a spanish version of vista can ne1 help me in this case?????
– Added by an anonymous user on Jan 29, 2008 at 9:19 am
comes up with: 'et global command failed on IPv4 The requested operation requires elevation.' even with elevation/ctrl+shift>enter=
– Added by an anonymous user on Mar 26, 2008 at 9:47 pm
Yes it works alright...went from 30-40 upto 350 ia arount 5 seconds!!Thanks very much!
– Added by an anonymous user on Mar 28, 2008 at 10:23 am
i feel lik an idiot cuz the shift and control key holdin down doesnt work
– Added by an anonymous user on Mar 29, 2008 at 3:10 pm
no change for me, is this just for bittorrent or can i use it for utorrent as well
– Added by an anonymous user on Apr 12, 2008 at 10:42 am
WaWaWeeWa!!!!!!!!!!!! It Worked!!!!!!!!!!! my speed jumped 4 times faster
– Added by an anonymous user on May 04, 2008 at 5:05 am
WaWaWeeWa!!!!!!!!!!!! if it doesnt work just open command prompt with "run as administrator"
– Added by an anonymous user on May 04, 2008 at 5:09 am
help please, when i do it i get ; "set global command failed on IPv4 the requested operation requires elevation. What does this meen?
– Added by an anonymous user on May 08, 2008 at 6:25 am
Did nothing for me except block all my start up programs. I guess it could be considered effective, I normaly set around 10 or 15 kbs, but I did hit 16 at one point..course it could have something to the torrent accelerator I installed after try this method.
– Added by an anonymous user on May 18, 2008 at 8:57 pm
Sweet, My Speed went from 184 kb/s to 42.8 kb/s.
– Added by an anonymous user on May 25, 2008 at 8:03 am
How can it be sweet to go down from 184 kb/s to 42.8 kb/s ?
That's more than 75% decrease.
– Added by an anonymous user on May 28, 2008 at 1:26 pm
Set global command failed on IPv4 The requested operation requires elevation.
– Added by an anonymous user on May 28, 2008 at 2:40 pm
Yeah, it does say that you need to run the command prompt at elevated (admin) permissions. If you are getting this error, you probably are not running on an elevated command prompt.
– Added by an anonymous user on May 28, 2008 at 4:52 pm
"I Highly Recommend product. It make internet BT connection download from 44kb to 10000mb in 4 second!" Why dont they just pay a bunch of asians to write crappy comments like this? This method dosent work... it actually decreased my speed.
– Added by an anonymous user on Jun 15, 2008 at 5:45 am
it worked for me
– Added by an anonymous user on Jun 18, 2008 at 7:28 am
Just right click on CMD and hit run as admin...
– Added by an anonymous user on Jun 29, 2008 at 12:04 am
didn't work
– Added by an anonymous user on Jul 24, 2008 at 10:38 am
Doubled my dl speed, thnx
– Added by an anonymous user on Jul 29, 2008 at 5:22 am
works fine for me, it doubled my speed.
– Added by an anonymous user on Aug 17, 2008 at 7:33 pm
i keep getting "'set global command failed on IPv4 the requested operation requires elevation" any ideas?
– Added by an anonymous user on Aug 29, 2008 at 5:30 am
Dude that sucked! Now my 2Gig Download on Azureus says estimated time 179 days! F THis!
– Added by an anonymous user on Sep 06, 2008 at 5:33 pm
so far so good it seems to have worked glad I came across your tip
– Added by an anonymous user on Sep 16, 2008 at 3:45 am
Thank you so much!!! It pretty much tripled the download speed for a slow torrent:)
– Added by an anonymous user on Oct 06, 2008 at 8:19 pm
Hell ya!!!! Download speed is crazy!!! Thanks
– Added by an anonymous user on Nov 21, 2008 at 1:28 am
does not work for me
– Added by an anonymous user on Dec 03, 2008 at 1:55 pm
Didn't work for me, it decreased my speed..
– Added by an anonymous user on Dec 28, 2008 at 8:52 am
It says "Set global command failed on IPv4 The requested operation requires elevation"
Does it mean it worked or not?
– Added by an anonymous user on Jan 22, 2009 at 1:18 pm
firstly i was limited to a 30kpbs connection, after i done this i was easily downloading at a minimum of 90kbps worked great for me, thanks for the tip...purely positive feedback my friend :D
– Added by an anonymous user on Mar 04, 2009 at 2:22 pm
It worked fine with mine too.Thank you for this tip :)
– Added by an anonymous user on Apr 02, 2009 at 8:47 am
It did not work for me. In fact it becom slower. I was downloading 100 kb/s before and after the change it was 20- 40 at max. I reseted as suggested here and it went back to 100.
– Added by an anonymous user on Apr 04, 2009 at 12:43 pm
Your tip was great my speed was better.
– Added by freedomdebtrelief on May 13, 2009 at 11:12 am
No speed change for me.
– Added by an anonymous user on Jun 08, 2009 at 8:14 pm
What alot of websites neglected to say was RESTART when doing this command, I had already tried it but didn't restart. Now... it works like a charm, i'm back to 450k :D Thank you. For those that have the elevated problem, type cmd then when it comes up, right click and run as admin :)
– Added by an anonymous user on Jun 13, 2009 at 4:27 am
Didn't really change for me. I was about 100 kB/s and now I'm the same.
– Added by an anonymous user on Jun 14, 2009 at 3:22 pm
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