Mouse without borders issue – Only one usage of each socket address

I have been using Mouse without Borders, a program that allows you to make a virtual KVM between machines for some time at home and it is awesome. You can use one set of keybard and mouse among various (windows) machines including clipboard and copy and paste. If you haven’t tried it, I would highly recommend it.

However lately I could not connect between two machines and kept getting the error: “Only one usage of each socket address“. To the point where it was unusable and was pretty annoying. I looked online at their site but nothing jumped out. BTW, I was seeing this only on one machine (running Windows 10) and not the other one (also running Windows 10 but an inner ring of the Creators Update – essentially the next version of Windows).

What I understand the issue to be is that Windows is running out of ports and where programs that use a port for a short time, it won’t matter much, in this case the port is always going to be used.

The solution that seems to be working for me is quite simple – we increase the number of ports available to Windows. This is quite simple and to do this if you run an elevated command prompt and copy and paste the following command:

netsh int ipv4 set dynamicport tcp start=1025 num=64511

And if you are not sure on how to get the elevated command prompt – easiest way to do that is press WinKey + X, and from the menu select Command Prompt (Admin) as shown below.

Elevated command prompt menu
Elevated command prompt

Author: Amit Bahree

This blog is my personal blog and while it does reflect my experiences in my professional life, this is just my thoughts. Most of the entries are technical though sometimes they can vary from the wacky to even political – however that is quite rare.

Quite often, I have been asked what’s up with the “gibberish” and the funny title of the blog? Some people even going the extra step to say that, this is a virus that infected their system (ahem) well. [:D] It actually is quite simple, and if you have still not figured out then check out this link – whats in a name?

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