Hello,
Has there been any progress made on the Setting SketchUp 2020 as the default application in Windows bug? There is a known problem where the Open With menu shows two entries for SketchUp 2019. The second of those is really SketchUp 2020. Same thing if you are in Properties setting the default application for SKP files. I just installed the latest version hoping that would solve it, but it didn’t work. I have restarted, I have uninstalled a couple old versions of the program… but nothing seems to work.