CoreTelephony Trace File Error

December 6, 2016
Posted in Mac

Error/dialog  following  upgrade to EOS X 10.11 El Capitan on Mac

CoreTelephony-Trace-File-error.jpeg

Solution: Close SIP (System Integrity Protection) and then modify the permissions.

Step 1

  1. Reboot your Mac into Recovery Mode by restarting your computer and holding down Command+R until the Apple logo appears on your screen, and then go to Recovery Mode.
     
  2. Click Utilities > Terminal.
     
  3. In the Terminal window, type in ‘csrutil disable’ and press Enter.
     
  4. Restart your Mac.
     
  5. If error message gone, success!

Step 2

  1. Reboot your Mac into Recovery Mode by restarting your computer and holding down Command+R until the Apple logo appears on your screen. 
     
  2. Click Utilities > Terminal. 
     
  3. In the Terminal window, type in ‘csrutil enable’ and press Enter. 
     
  4. Restart Mac.