you can try it, i havent tried it yet, cant get my network drivers working. posted on Sunday, April 17, 2005 3:11 PM by Rafael Changing the maximum concurrent half-open connections on x64 platforms Note: It appears people are having trouble with this therefore I suggest waiting, despite my initial post. Seeing as the infamous 'Event ID 4226' patch cannot function correctly in x64 environments, you'll need to edit tcpip.sys manually. Don't worry this isn't hard - Just open a copy of tcpip.sys in a hex editor, jump to offset 0xA6463 and change: 58 02 00 00 (maximum connections = 600) ... to read: FF FF 00 00 (maximum connections = 65535) ... or whatever value you wish. Don't forget to rename the original copy before dropping your patched version into \system32\drivers! I emailed the author with suggestions on how to revise his patch to support the x64 platform. http://www.extended64.com/blogs/rafael/arc.../04/17/257.aspx