Windows: How To Open/Edit Environment Variables in Win10

Environment or System variables are dynamic variables in a system which are used by process or programs in the system. Most times we need to edit and set name/value pairs in system variables to run our desired programs like Java. See how to open Environment variables quickly in a Windows 10 system. 4 ways to open the dialog: 1. In Desktop, My computer icon - Properties - Advanced System Settings- Environment Variables button. 2. In keyboard, type WindowsKey+R - then in run dialog - type "SystemPropertiesAdvanced" 3. In keyboard, type WindowsKey - start typing Environment - Click "Edit the system environment variable" 4. Open CMD prompt - rundll32 sysdm.cpl,EditEnvironmentVariables Please put a comments and let know which one you are using the most! Thanks!!