the solution for the Windows Vista Event ID 4226 problem (TCP/IP security limit)


“Apparently in Windows Vista, Microsoft still enforce and hard-limit (hard coded in tcpip.sys) the maximum simultaneous 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, to spread to uninfected computers, or to launch distributed denial of service attack (DDoS). When the limit is hit, in Event Viewer, there will be such an entry:”

How to fix that and the needed tools can be read and downloaded here.

Source: Patch for EventID 4226

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