Windows XP SP2 TCP Connection Limit (Event ID 4226)
With the release of Service Pack 2 (SP2) for Microsoft Windows XP, the SP2 has introduced a feature that limit concurrent TCP connection attempts that are possible to 10 per seconds. In Service Pack 1 or without Service Pack, there is no limit on concurrent TCP connection attemps.
This feature is introduced in order to reduce the threat of computer worms spreading too fast without control. With the limit, only a maximum of 10 connection attemps per second are allowed. This may have affects applications, servers and p2p programs that attemp to open many outbound connections at the same time.
To know if you’re hitting concurrent TCP connection attempts limit, use the Event Viewer. Under “System”, look for TCP/IP Warnings saying: “TCP/IP has reached the security limit imposed on the number of concurrent TCP connect attempts”. It has the Event ID of 4226.
To change or remove the limit imposed on connection attempts in Windows XP SP2, you can use the following program that works on every language of Windows XP:
Event ID 4226 Patcher version 2.23d
Website: http://www.lvllord.de/
Update: TCP/IP simultaneous connection limit patch for Windows Vista
You might want to back up the tcpip.sys, although the program has the ability to restore tcpip.sys to original state.
MDL blog postings now continue at Tip and Trick, and readers are welcome to join My Digital Life Forums.
Related Articles
- TCP/IP Has Reached the Security Limit Imposed on the Number of Concurrent TCP Connect Attempts Error on Windows Vista
- ppStream Connection Limit in Configuration Settings
- Windows Vista tcpip.sys Connection Limit Patch for Event ID 4226
- VistaTcpPatch Windows Vista TCP Half Open Limit Auto Patcher GUI Version
- Limit Maximum TCP Connections to Web Servers
- Increase Multithread Download Speed by Disable Vista Auto Tuning on TCP/IP
- Optimize and Increase BitTorrent (BT) Download Speed in Vista
- Watch Streaming p2p Live TV on the Internet
- CrackTcpip.sys Driver for Vista SP1 v.668 to Patch tcpip.sys 6.0.6001.17052
- Workaround to Run eMule in Windows Vista
Entries (RSS)
January 2nd, 2006 02:46
[...] Note: If you’re using Windows XP with SP2, you need to patch the limit of simultaneous TCP/IP connection of 10 to higher number, i.e. 100. Note: As the ppStream will download media stream at optimum speed of about 372 kbps, so it’s best to have a faster Internet connection to have better experience. 512 kbps is simply not enough. [...]
January 4th, 2006 13:18
[...] Note: TCP connection limit of Microsoft Windows XP SP2 must be altered to higher value in order for this tweak to work properly. [...]
January 6th, 2006 18:38
[...] Disable Windows XP Service Pack 2 TCP Connection Limit [...]
August 31st, 2006 14:47
It doesen’t work with my system, WTF?
November 9th, 2006 14:58
FYI — AVG scan of the ZIP file containing the Event ID 4226 Patcher version 2.23d is infected with embedded object HackTool.AB
November 18th, 2006 11:25
The File is infected. You loosers!
November 20th, 2006 19:31
The file is not infected. It just does something that a virus/worm might also want to do (to increase its transmission rate). So it is correctly reported as having virus like behaviour.
Google* “Event ID 4226″ and read the comments on David Kaspar’s blog (top link for me).
* Of course I really mean “use a non-specific internet search tool that will not sue you for using their name as a verb”. c.f. “Hoover”
February 8th, 2007 22:11
Hello,
I used it but it didnt work. My system WinXP Pro SP2 opened in Safe Mode and when I run this file, said “do you want to change limit to 50″ I said yes. Restarted system but what is the problem??? Please help me.
February 18th, 2007 02:46
[...] Vista Network Connections Is there a Vista network connection limit thing just like SP2 of XP has? example of the SP2 limit: http://www.mydigitallife.info/2005/1…event-id-4226/ [...]
March 26th, 2007 23:25
[...] And this -> Windows Xp Sp2 Tcp Connection Limit Event Id 4226 [...]
April 9th, 2007 03:30
[...] half-open (incomplete) outbound TCP connection attempts per second that the system can make, as in Windows XP SP2, in order to protect the system from being used by malicious programs, such as viruses and worms, [...]
May 8th, 2007 23:02
[...] are good to go. Please note that Windows XP SP has limited connection. Check this article on how to remove the limitation. It would be better if you use your Windows 2000 Server/Windows 2003 Server as the VPN server since [...]
May 30th, 2007 09:21
When I try to do LvlLord’s patch I am told that the following files could not be renamed:
-\I386\TCPIP.SY_
Please rename these files manually.
How do I do this?
December 1st, 2007 05:03
I’m trying to use the LvlLord’s TCP/IP patcher on my OS which is Windows Vista. When the dos screen comes up, it tells me that there is an error. The error says: Error read file “C:\Windows\System32\Drivers\TCPIP.SYS” at position 0. Press any key to continue. I can’t get to press “Y” as it won’t allow me pass the error screen. Any help here? is there one suitable to run on Vista?
March 13th, 2008 08:25
Lvlord’s patcher is crap. It doesn’t work. It simply disables the event 4226, doesn’t actually remove the limit of 10 half-open connections.
April 25th, 2008 00:47
The patch fucked up my PC!
the firewall intrusions are blocking traffic every seoncd!!
don’t download this crap FILE IT Didn’t work
fuck off biotch
April 28th, 2008 10:48
lol, keep in mind that the patch didn’t work on your computer. That doesn’t mean it doesn’t work.
I just upgraded my limit from 10 to 50 with that program (It was the EvID4226Patch.exe).
So thanks for these instructions!
May 4th, 2008 06:25
So instead of fixing the exploits worms use, they simple cripple the system and call it a fix. Fucking microshit retards!