Check the error trapping in the XP SP2 system crazy BT

Frequently using BT software to download friends may find a strange phenomenon: after upgrading the system to Windows XP SP2, in the previous system download BT like flying, but often can not connect Case. Even if connected, the download/upload speed is not as good as before. At first I thought it was a problem with BT software, but after I tried almost all the BT software on the market, the situation still has not improved. I uninstalled the Rising firewall again, or not. So I simply restored the system to SP1 (I kept the Ghost backup of SP1 when I upgraded to SP2), and BT "lived" again. So I concluded that the problem must be on SP2. By chance, I saw a lot of warnings about Tcpip in "Control Panel" → "Performance and Maintenance" → "Administrative Tools" → "Event Viewer" → "System". The event code is 4226, and the event time is also positive. It was when I used BT software. So, I selected a Tcpip event and saw the description of the event in the menu "Actions" → "Properties": "TCP/IP has reached the security limit for the number of TCP connection attempts. For more information, see http: //go.microsoft.com/fwlink/events.ASP Help and Support Center.” I learned through help that the original Windows XP SP2 released by Microsoft increased the limit of TCP simultaneous connection attempts and set it to a small value. "10", when the system's TCP connection attempt exceeds this value, the system will refuse to connect due to security reasons. The intention is to prevent multi-threaded attacks such as shock wave shock waves, but in this way some P2P software suffers. When busy, it may cause all network connections to fail. The problem that BT software often fails to connect is finally found. It is. We can solve this problem by installing a third-party patch. The operating system that can be used with this third-party patch is Windows XP SP2 (RC2 or higher) or Windows 2003 Server SP1 beta. The current version of this patch is 2.11a. The download address is: http://www.lvl lord.de/download.PHP?url=en/EvID4226Patch211a-en.zip The easiest way to install is to double-click EvID4226Patch.exe after unzipping. Then press "Y" (this limit is relaxed to 50 by default, if you press "C" you can change it to a larger number). Because the modified tcpip.sys system file, Windows will pop up the Windows file protection dialog box, click Cancel and then choose to keep the current version. After the restart, we can be crazy BT again.