High Sierra leaves the user wondering what has happened. Sudo rm -rf /Library/StagedExtensions/Applications/BlueStacks.appĪlso fails, with the report Operation not permitted. Trying to remove it using a conventional Terminal command Tucked away in a mysterious folder, new to High Sierra, in /Library/StagedExtensions/Applications, its icon is defaced to indicate that the user can’t even run it. Sure enough, after trying that, the app still won’t go and the error message is unchanged.Īnother strange thing about this ‘app’ is that it’s not an app at all. It does, though, leave the slight puzzle as to why the Finder didn’t simply prompt for authentication instead of cussedly refusing. So the next step is to select the offending item in the Finder, press Command-I to bring up the Get Info dialog, and change the permissions. The moment that we see the word permission, all becomes clear: it’s a permissions problem.

The Finder kindly informed him that “The operation can’t be completed because you don’t have the necessary permission.”

But when a reader came to uninstall BlueStacks, an Android emulator, from his Mac running High Sierra 10.13.2, he found the way blocked. When you install something, you expect to be able to remove it too.

Secure empty trash mac os sierra