Question : Refresh System Environment Variables

Is there a way to refresh the system environment variables once a new variable is set?  I'm creating a new system variable using setx.exe.  Next, when I try to retrieve that variable using an API call, the call returns a NULL.  However, if I reboot, it works fine.  Can this be done without a reboot?

Answer : Refresh System Environment Variables

There is no way to do that without having the process be reinitialized (IOW: restarted). The process receives a copy of the parent process' environment block representing the system state when 'CreateProcess()' was caleed. Then the loader finishes the initialization and calls the program's entry point with that data.