The update item needs to be not grayed out.
What is the status of the other two items next to Updates…: Sign Out/Sign In and Manage My Account? Are those grayed out as well? If Sign Out is active what happens if you Sign Out and then Sign In within PS? It might take a few seconds or longer for PS to contact Adobe servers so that the Updates and other online items become active. But if it takes longer than say a minute then something has likely blocked access to the Adobe servers from your computer.
Is there a firewall either on your computer or upstream on your network that could be blocking access to the Adobe update sites?
FYI, PS CC 2014.1.0 and ACR 8.6 are the current versions.
Sign in/sign out and manage my account are both available and working. Turning the Firewall off made no difference. Upstream on the network is the standard box from the UK's main broadband provider so unlikely to be that. Odd that I downloaded and installed Photoshop just two weeks ago but did not get the latest versions.
The software isn’t still running in trial mode, somehow, is it? Did Lightroom update to LR 5.6?
You might try doing the steps here to reset the local information about what is installed in case that is part of the problem, but until Updates works I’m not sure anything else will:
You also might see if Help / Updates runs from within Lightroom.
You can find updates and install them manually from links near the bottom of this page’s content before the comments section:
Lightroom is OK at 5.6 and help>updates works. There were problems a week ago with Photoshop saying I was still running the trial version but Adobe resolved those - or I thought they did. It's a good point. I will follow it up.
Are you running the standalone LR 5.6 that needs a serial number, or are you running the CC version of LR?
If you do Help / Updates in LR, and it says everything is up-to-date, are there checkmarks next to all the PS items so AAM checks for updates to those, too, or are PS updates disabled, in there?
I also forgot to mention that the latest CC Desktop app is: 126.96.36.1998. You can check the version in CC-App / Gear / Preferences / General / Account.
You might want to uninstall everything and run the run CC Cleaner as advised in Solution 4 of the first link of two that I included, above.
CC version of LR.
Have just spent four hours online with Adobe support who tried a lot of things but no success. Software was uninstalled and reinstalled but to no avail. ACR was updated to 8.6 but when Photoshop CC 2014 was reinstalled it went back to ACR 188.8.131.52. They tried hard and do not give up, I will say that for them! The problem has now been escalated by Adobe support to a higher level.
I have Creative Cloud 184.108.40.2068 after it was reinstalled by Adobe support.
Thanks for your suggestions ssprengel.
It turned out that the problem was caused by an enterprise version of Acrobat Pro which was licensed by Adobe for my PC in connection with my work. This conflicted with the software licensed under the Creative Cloud Photography plan and was blocking the updates. I was prompted to go down this line of enquiry by this thread:
Removing Acrobat Pro did not solve the problem. It needed one of the Support Associates from Adobe to modify some of the files on the PC. Now running fine and all up to date.