I have been able to edit the environment variables in the past in Windows 7 by selecting “Advanced system settings” and clicking on “Environment Variables” and selecting a variable – in particular,
PATH – and editing the value and adding the required directory to it, like
C:\Program Files\7-Zip, but I am unable to edit the
PATH in Windows 10 to add this directory.
I have also tried a Windows search and navigating to “Edit the System Environment Variables” and clicking on
PATH, but still I am unable to type in this field as it’s not clickable. I have also deleted a directory in the path but still it wouldn't let me type in the field.