IT Administrator Permission

Are you logged-in to an Individual or an Enterprise account?

Enterprise users must go through their IT dept admin to get a package.   If accessing both accounts from one machine, consider creating 2 computer user profiles -- one for Enterprise, one for personal.

Meanwhile,

1. Open CC Desktop App.
2. Click the gear icon > General tab > Settings. Select "Always keep Creative Cloud up to date."
3. Click on your Avatar (top right image).
4. Sign-out of Creative Cloud.
5. Close all apps.
6. Restart your computer.
7. Open CC Desktop app.
8. Click your Avatar.
9. Sign-in with your personal ID and password.

And how are you signed in to the Creative Cloud desktop app? With a corporate/enterprise login?

There is also a security section of the Mac OS preferences that could be part of the problem.