So just to make sure I understand correctly… despite deleting the massive log file, projects are still not opening? Are you completely removing it from the Recycle Bin? I’m starting to think the drive having no space may be the cause but I just want to make sure the log file is fully being removed?
Regarding the log file being so large, it’s something on our radar and being discussed in [ Unity Creating Huge Editor.log file ]( Unity Creating Huge Editor.log file page-2)