Portfusion blocks all TCP connections in windows 10 32 bit professional(my work computer)

[youkie]

After visiting my work computer which sitting behind the company NAT once yesterday, I find my work computer cannot establish any outband TCP connection( from my web browers or trying to use putty) today, and the putty throw the error information saying that no buffer space available. Plus, the web browser throws the error like 103,105.

After I close the Portfusion that has been running since yesterday in my work computer, everything goes back to normal.

I think maybe the Portfusion crammed the TCP buffer?

Can you guys nicely fix this out?

Thanks.