How can I pop up the system property window in windows7

Question

I want to open the system property window to change environment variable in Windows7. I know how to open that window, and used to use that window sometimes before, but today I opened the window as usual, It does not appear. How can I open it?

Answer 1

You should check why that command stopped to work in your environment, meanwhile try with this (from command line or from Run):

rundll32 sysdm.cpl,EditEnvironmentVariables

Also check this: https://msdn.microsoft.com/en-us/library/windows/desktop/cc144191%28v=vs.85%29.aspx