Novell GroupWise 2014 R2
You have iPrint client version 6.0.x installed on Windows and it works fine.
After that you install GroupWise R2 SP1 client. Once the install is finished, you cannot start iPrint client.
This fix for this issue will be released in the upcoming GroupWise 2014 R2 SP1 HP2 due out in the December 2016 time frame.