Two PCs, Win7x64, have Norton Utilities 15 installed. A couple of months ago, both copies suddenly lost their activation and needed the code to be entered when starting. This has been fine with one PC - it continues to start correctly. The other PC needs the code to be entered every time it is started after re-booting. Then it is ok until after the next re-boot.
What is causing it to forget that it is activated?
How can I make sure that it remains activated?
BTW v15 does what I want it to. I do not want v16 and all the hassle that comes with it!