Restart computer once.
Launch Task Manager and end all Adobe related tasks like Creative Cloud , CoreSync, AAMUpdater...............etc also if present end setup related tasks like for example : Setup.exe , Windows Installer....etc
Press Windows button (located between Ctrl and Alt buttons) along with R button together at a time , you will get a run command window.
Type in below command and hit 'Enter' key.
Appdata
It will open Appdata folder.
Then navigate to Local>Adobe>AAMUpdater.
Open AAMUpdater folder and rename 1.0 folder to Old-1.0.
Then launch any of CC apps like Photoshop , Illustrator,,,,etc , click on Help menu and select Updates option.