I use this VB script for calculate my total working time (hours, minutes) when i was logon to my remote desktop with OpenVPN. Result outputs to file "out.txt" and on screen with MsgBox. You can replace input file "ext_vdoshchenko.log" to your own in C:\Users...\OpenVPN\log\ (script must be located here too). Victor Doshchenko 01.11.2018 victor.doshenko@gmail.com. Enjoy!)