I'm also having issues with this, and have seen similar issues with the group that I am the administrator for.
I tried this solution as well and it didn't work for me, either.
Same as above- I have tried uninstalling/reinstalling several times. Photoshop has been very temperamental for me, causing a fair number of crashes, and I'm hoping that an update to the most recent version will at least curtail some of those crashes.
But for some reason, nothing seems to get CC (and/or Illustrator or Photoshop) to recognize that updates are available. Even uninstalling PS and AI themselves and re-installing... For some reason, I get very old versions. 14.0 and 17.0.