Windows feature update fails with exit code 0. Setup.exe runs for a while with setup files extracted and partially installed.
Screenshot attached what happens when the timeout terminates the update.
Software Update timeout set to 1 hour, instead of the default 4 hours.
On the SMP Server, check settings> All Settings> Software>Patch Management>Windows Settings>Windows Patch Remediation Settings>Programs tab.
Set the "Terminate after" to 4 hours.
Recreate the Software Update policy distributing the Windows 10 feature update.