Question 1 what file do i have to unlock in photoshop cc to save preferences
What exactly do you mean, do your settings not get saved at quitting?
Have you repaired permissions yet?
Photoshop: Basic Troubleshooting steps to fix most issues
Question 2 Why have I had to go through about 10 screens to get here and still my simple question has not been answered.
Say what?
Are you complaining that your question has not been answered immediately on posting?
If so are you aware of the nature of this Forum?