Win system environment variables take effect quickly after environment variables are added or modified
Win system environment variables after adding or modifying environment variables, need to restart the system to take effect.
Here's how:
To modify the environment variable "PATH" for example, after the modification is completed, enter the DOS command prompt, enter: set PATH=C: , close the DOS window. Open the DOS window again and type echo %PATH%.
Don't worry about changes in DOS windows affecting the values of environment variables. Environment variables in DOS windows are just copies of Windows environment variables. But changes to the copy will trigger a refresh of Windows environment variables, which is exactly what we want!
