I'm thinking you're seeing this message while attempting to update a (any) studio tool, such as SDK or Gradle (as I was). In trying any answers above, I was not making and progress (the topmost comment suggested View > Tool Windows > Android, but it's from 2013, and a huge waste of time because "Android" no longer exists inside the "Tool Window" menu. This is a suggestion to stack-o to hide or archive SUPER-old comments.) Other answers suggested opening logcat, but this shows nothing for me in my update process. I was surprised by this suggestion because I though logcat was for viewing log output from log logic in the code (I could be wrong). But to get to the bottom line answer, I found that "IDE log" was just referring to the text box in your update window that's above the buttons that say Update now, or Cancel, etc. Because my Mac was too low on memory to update Android Studio, so I just scrolled up in that output window and found that my error was lack of memory on my host (this was written in red). My vote is that's the IDE log. I would hope Android would clear this up, as IDE makes us think there's another log inside our IDE, but it's really just in the update dialog.