Add an EXE to the Path variable for command line access.
- Windows + X
- System
- Advanced system settings
- Advanced
- Environmental Variables…
- System variables
- Path
- Edit…
- Append a semicolon followed by the full path to the directory that contains the EXE
- OK, OK, OK
;C:\Program Files (x86)\OpenSSL-Win32\bin
In step 9, sometimes is easier to copy and paste from Notepad before and after editing the Path.