When you are using alternative terminals like ConEmu or Console2, you need to restart not a console (read tab), but while terminal!

That is because child processes inherits parent process environment variables, but not reading them from system!

Also, sometimes explorer (or what shell you are using to start ConEmu?) need to be restarted. Or logoff-logon to ensure.

When you are using alternative tab based terminals like ConEmu or Console2, you need to restart the terminal, not a single console (read tab)!

This is because child processes inherit their environment their direct parent process, not from the system!

Sometimes explorer (or whatever shell you are using to start ConEmu) needs to be restarted, as in you have to kill explorer.exe, so your start menu disappears and relaunch it from task manager. If all else fails, log off and on again.