MaxFreeTcbs regedit tweak

MaxFreeTcbs determines how many active TCP connections your computer can handle at any given time based on how much physical memory you have and how much performance your computer has with regard to bandwidth.

If the number is too high, your computer may not properly process TCP transactions because of the high amount of active connections talking to the computer at the same time. However, if the number is too low, you can’t host or request as many connections as you’d like. While the setting is arbitrarily determined, you may want to bump up the number when you upgrade your hardware or Internet connection.

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What is MaxUserPort and how to modify it

When an application requests an available port to open from Windows, the operating system chooses one port from 1024 to a specified maximum known as “MaxUserPort.” A port on your computer allows you to establish TCP/UDP connections through the Internet and in your local network. What happens when you open more options to programs seeking a port? They find a port much faster than they would with only a couple thousand available choices.

Windows sets this value to 5000 by default, but you can set it up for any number from 5000 to 65534.

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