Hi Danilo, for the server that gets stuck at 30%, you might want to start by checking the installation logs (like SetupLog.txt or similar) to see if any specific errors are reported. Sometimes issues such as incompatible drivers, outdated firmware, or background software (like antivirus programs) can interfere with the upgrade.
Additionally, verify if there are any critical updates or patches that the system is trying to install which might be causing the hold-up. If possible, try temporarily disabling antivirus software and any non-essential applications during the upgrade. Running a system file integrity check before attempting the upgrade again could also be helpful.