P: Error: To complete serialization, please quit and restart Photoshop

I left it to reinstall over night, and just got up to find another error. This time it said the install failed because the Adobe servers could not be reached.

Very strange. There's a handful of people hitting this today. I suspect it has something to do with daylight savings time.

Under Date & Time, do you have "Set date and time automatically" enabled? What about the set location option under Time Zone?

This is VERY annoying I need to work on PS on my main Mac - Greg did you get a working solution from support?

Using the Remove CC Desktop App and reinstalling it did not work either...

Deleting and Reinstalling PS did not work

Seems to work OK on my other Mac - reinstalling PS...

It is also affecting PS CC2014

Yup - same here started today too - think it's a CC error as I haven't done anything to the OS or other apps to warrant it being user error.

yea, mine just started a few hours ago

Same here. It's onlly just started.