A few users reported that when upgrading to 6.2.2.0 from a previous version, the installation process will end during splash screen without any notification and users can't finish installing v6.2.2.0.
This seems to be related to windows and has not been reproducible.
Solution 1
Solution 2
Solution 3
If the above solutions do not work then please contact synchrosupport@bentley.com to speak to an agent.