I’ve been seeing this for a few PCs across the domain, and decided it was the time to give it some attention. PCs were failing to install the Config Manager client; I was getting the following error from the Fallback Status Point:
5.0.8239.1000 Deployment ExitCode: 1603 Action: CostFinalize. ErrorMessages: Could not access network location %APPDATA%\. Could not access network location %APPDATA%\.
Equally, the CCMSETUP.LOG reported:
I found that the PC’s registry had issues; specifically with the UserShell keys. In my instance, the following key:
…should have a value of:
Once changed, I stopped the ccmsetup service and then started it. The client then installed:
So to summarise. A registry key had its value changed from %USERPROFILE%\AppData\Roaming to %APPDATA%. Changing it back had an immediate remedial effect.