Fix The “Simulator Verification Failed” Error In Xcode

As I tried to update Xcode to v.6.4 (6E35b) by using the App Store updater – the update procedure broke up with the error message no HTTP response. After restarting the MacBook, the App Store, and the WiFi connection, the error message was still there. Funnily enough, I could update or download everything else!

I decided to uninstall the whole Xcode installation, but this doesn’t help in the end. The error message was still there as I tried to download and install Xcode from the scratch.

Based on that I downloaded the newest Xcode version from the Apple developer site and installed Xcode by moving the Xcode.app file to the /application folder.

After starting the fresh installed Xcode, an error alert popped out and told me: Simulator verification failed Fortunately, I had a terminal open and could check the application folder. Unfortunately, I copied the Xcode application file with my personal user, and the Xcode application file inherited the permission.

rschulz@MacBook-Pro:~/www/$ ls -al /applications | grep Xcode
drwxr-xr-x   3 root     wheel   102B Apr  1 08:13 Docs for Xcode.app/
drwxr-xr-x   3 rschulz     admin   102B Jul  2 07:36 Xcode.app/

This led to the error I described above because the other Xcode components (which I didn’t remove!) used a different user:group permission (root:wheel). What I did was to change the file permission from rschulz:admin to: root:wheel

rschulz@MacBook-Pro:/applications$ sudo chown -R root:wheel Xcode.app
Password:
rschulz@MacBook-Pro:/applications$ ls -al | grep Xcode
drwxr-xr-x   3 root     wheel   102B Apr  1 08:13 Docs for Xcode.app/
drwxr-xr-x   3 root     wheel   102B Jul  2 07:36 Xcode.app/

After the Xcode.app got the correct permission recursively, I could run Xcode without any error messages.

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