The solution to MB Star C3 OBD2 diagnostic scan tool Xentry software 3.17 problem by obd2tool.com.

Problem:

When open the MB Star C3 diagnostic system Xentry software, the system pops up Xentry 3.17 error.

Here is the solution by obd2tool.com technician:

Delete the lic_key_2.dat and lic_key_2x4712 files under LicDir folder.
Follow the instruction to re-activate the star diagnostic DAS and Xentry software.
How to activate MB Star diagnostic DAS/Xentry

If still not working after activation, you need to send the Benz Star diagnosis C3 hardware back to repair.