Win10 Cannot Restart After Upgrade from Avast Free Beta to Avast IS

[REDACTED]

I have to report my problem about this version.
Windows 10 Home 64bit (fully updated- and clean install. It is not upgraded from Win7 or Win8.1)
Avast Free Antivirus 2016.12.1.2265

- Installed Avast Free Antivirus latest beta (from here)
- Installation completed and restarted the PC
- Downloaded my avast license from 'my.avast.com' account (2 year/1 PC IS license)
- Inserted the license to Avast Free Beta - it downloads the paid components
- After some time, Avast asked me to restart my system
- Clicked to restart... and my notebook cannot restart. I do not understand what happened, the only change was Avast on my PC
I inserted the boot USB and re-installed Windows 10 to avoid this problem. Please try to fix this. Thanks...

[Eddy]

Perform a clean installation of IS and see if it solves the problem.

[REDACTED]

Perform a clean installation of IS and see if it solves the problem.

Clean IS install has no problem. The problem was upgrading from Free  to IS with license file.
Thanks

[Asyn]

The problem was upgrading from Free  to IS with license file.
Thanks

Known issues:
- User interface might freeze after inserting a license