Trying to get iOS 8 simulators in XCode 7. Prior to beta 3, that wasn\'t possible but in beta 3 release notes:
\"Xcode 7.0 beta now supports downloadable
I found another workaround on the Apple forums for this issue that does not require downloading/having other versions of Xcode. If you run Xcode using sudo
the simulator downloads and installs work just fine:
sudo /Applications/Xcode.app/Contents/MacOS/Xcode
Note: Once the downloads and installs are complete you should quit Xcode and start it normally.
Update: XCool points out an important safety tip in the comments that I wanted to highlight here:
Make sure that you close any projects before opening Xcode using sudo, otherwise there'll be a lot of permission issues with any files that are currently open when the installation occurs.