SCCM client install failed with exit code 1603

You’ll notice this in your ccmsetup.log, MSI: Module C:\WINDOWS\system32\CCM\VAppRegHandler.dll failed to register.  HRESULT -2147221164. You need to register the atl.dll in order to make it works.

1. Perform ccmsetup /uninstall
2. Enter regsvr32 atl.dll in command prompt
3. Reinstall the client

Enjoy~! =)