As a Server Administrator, I sometimes face the challenge of changing many passwords. To make sure that I can create a random secured password I use the Random Password Generator.
As you are fully aware, top engineers create their own tools so I have also created the SecuredPassGen tool to do the very same thing.
Save the file somewhere of your choosing and then doubleclick SecuredPassGen.bat to run.
Specify the required length of password and let the tool create it in a micro-second.
Download the tool and enjoy.