Hey i have a Solution.
go to HP ZBook Power 15.6 inch G9 Mobile Workstation PC Software and Driver Downloads | HP® Customer Support -> Utility-Tools and Download ICPS.
run sp144782.exe
Now go to C:\SWSetup\SP144782\src\Drivers Copy everything.
Next Step go to C:\ProgramData\Intel\Connectivity in my case there wasnt the folder ConfigurationFiles. If that is the case add the Folder.
it should look like this --> C:\ProgramData\Intel\Connectivity\ConfigurationFiles
Please paste everything you copy into this folder.
Following that action, the update notification will appear again. However, the notebook does not install the update, and it disappears without displaying the message 'You must update your computer.