Articulate storyline 360 failed to install. Error code: 3E8 Apr 29, 2018 By carol huang I was trying to install Articulate storyline 360 free trial on my PC laptop but always got the error message. The complete message said: "Storyline 360 version 3.15.15581.0 failed to install. The error code was 3E8. Unknown error" My laptop is old with windows 7. Is this the reason? Thanks!