Eitan Caspi wrote:

Hello,

After installing windows XP SP2, I was unable to browse web sites or send /
receive emails.
I disabled the use of windows firewall (I am using another personal fw).

My system is not infected by anything, checked.

I have found in the "system" event log the event ID 4226 - "TCP/IP has
reached the security limit imposed on the number of concurrent TCP connect
attempts".

I was able to find a text referring to this issue only by clicking the link
within the event ID description. It didn't include a way to overcome this
limitation.
I could not find any TechNet article by MS referring to this issue and thus
not a workaround, either by a binary or by a registry key / value.

I wish to know, preferably by someone from "Microsoft", how can I remove
this limitation or set it to a higher limit?
Hi

http://www.microsoft.com/technet/pro.../sp2netwk.mspx

Click TCP/IP in the link above and look for:

"Limited number of simultaneous incomplete outbound TCP connection attempts"


You should not be able to reach this limit by only surfing some Web
sites and send / receive emails manually. There must be something
else in your computer that creates a lot of TCP connections.

There is no supported way to change the limitation, but I have seen
statements that it is possible to do a hex edit on the tcpip.sys file
to increase the limit.


--
torgeir, Microsoft MVP Scripting and WMI, Porsgrunn Norway
Administration scripting examples and an ONLINE version of
the 1328 page Scripting Guide:
http://www.microsoft.com/technet/scr...r/default.mspx