Photoshop CC 2017 update failed with error 160

Not sure if it may have something to do with the problem, but I had just finished the trial period and signed up with a subscription for Creative Cloud.

I then found there was an update for Photoshop CC (2017)

It goes all the way through to 100% but then fails. The details when I click more information are:

Exit Code: 160

-------------------------------------- Summary --------------------------------------

- 2 fatal error(s), 0 error(s), 1 warnings(s)

FATAL: Error (Code = 160) executing in command 'SetRegistryValueCommand' for package: 'AdobePhotoshop18-Core_x64', version:18.0.1.29

FATAL: Error occurred in install of package (Name: AdobePhotoshop18-Core_x64 Version: 18.0.1.29). Error code: '160'

WARN: Error Setting Registry - Start 64-bit:1 root:2 key:SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\Photoshop.exe name:Default type:REG_SZ data:C:\Program Files\Adobe\Adobe Photoshop CC 2017\Photoshop.exe. Check for Registry permissions. (Error: Error 5 Access is denied.)

-------------------------------------------------------------------------------------

I am running Windows 10 Home.