I have the same problem with a Galaxy Tab S2. I used Google Device manager to lock the tablet, but it wouldn't accept the new password. How do I unlock the tablet?
I'm having the same problem. but don't see a way to unlock my device on the Google device manager page. What do people do when they find their lost device?
Thanks so much! This was exactly what I needed! I did get the "Launcher has stopped" message after I followed your directions but clicked on the app launcher (circle with 6 squares inside), and now everything's working. Thanks again.