Once you have validated it is on and Working but not working with your app you need to enter the dark world of manually hacking about to get JAB working for your application - which is rare but sometimes needed. There is good online Blue Prism help for JAB, there also used to be a good Java guide on the Blue Prism portal with instructions for a manual install where it is needed (not sure if it still exists) - if you can't find good instructions start by copying the missing dll to the Blue Prism Automate folder it is looking for to see if that works as a shortcut.