Error code 1603 while installing

I downloaded Revit 2020 on my laptop a couple of weeks ago.

After I needed to perform a system recovery yesterday, I could not open Revit anymore.
An error “The License manager is not functioning or is improperly installed. AutoCAD will shut down now.” occurred.

I did a clean uninstall and tried to reinstall Revit afterwards, but it keeps generating error 1603.
I’m not an expert in computers, so I’ve no idea how to work around it. I’ve tried some of the possible solutions given in other threads, but nothing worked.
I’ve attached the download log.

What can I do to fix this error?

Thank you in advance!

Hello Ruben
Are you sure you’re on the right forum? Revit is some kind of Autodesk product.
Maybe try here: Revit Products - Autodesk Community

Have a nice day!