OK, i have been using this application to increase my half-open connections for quite sometime now and i had no problem what-so-ever. But still, another warning from The God of Tech (i just wanna make sure that you know that's not me, right?), you need to make sure your line of defenses are really good, it need to be good from the beginning if you are a frequent user of BitTorrent. I will continue this article assuming that you are good and anything happens beyond this, it's your damn problem ;-). Get The Utility First, you need to download the utility, just click the link below to go to the download page: Download The Utility!!! After you have downloaded it, unzipped (Unzipper) it and double click the .exe file, it should look something like below here: ~Utility Image (click for bigger image)~ Notice the cool red arrow, which i drew myself,? it is pointing the number of current half-open connections that my Windows allows. Now look the image below: ~Type Something (click for bigger image)~ Pay good attention to where the red arrow is pointing, if you are looking at the same window like above, you should notice a blinking _ , it means = type something !!!. You are asked whether you really want to change the number of half-open connections to 50, you can either type Y, for yes , C, if you want to choose any other number below 50, or N, for get the hell out of here. I Typed Y I choose to type Y, and if you also did the same, a window, something like below, should pop-up, requesting you to insert the Windows XP CD, click on 'Cancel' Insert CD Upon clicking 'Cancel' another pop-up window will appear prompting you whether you are sure about this, click on Yes. Then just wait till the count down for the Utility to finish its work, then click on any key to end. That's all, piece of cake. If You Typed C If you took the road not taken, then the Utility will ask you for the number of half-open connections that you like to have, type any number between 10-50. After that, everything will be just the same as above. #update: I just want you guys to know that, when you type 'C' , you actually can choose HOC between 10-16777214, but i wouldn't recommend having more than 100. In my opinion, 50 is already adequate enough. But then again, it is all up to you - Thanks Rob for commenting about this :-) There is a blog post that you can read more about this EventId 4226 if you are interested : Read More. After that you can continue by changing the number of half-open connections you are going to allow for your BitTorrent client, if you are a Bitcomet user, then you can go here : Personal Bitcomet Setting , to learn how to do so. If there is any problems, just contact me.