New
#410
Thanks for the suggestions. As expected, only a clean install of 1903 solved my problem. However, I made a complete backup of system and boot partition with EaseUS Todo Backup, which includes installed applications and data directories such as Program Files x86/x64, AppData and ProgramData directories. I really liked this software, it was easy to use and it was able to restore data from backup in a selective way, I mean, I could choose to restore only the folders that I wanted.
However, registry keys were lost, like file associations and applications entries shown on Programs and Features. Do you know if it's safe to restore those, or I'd better not mess with Windows Registry and just reinstall the applications?