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WU_E_SETUP_NOT_INITIALIZED
WU_E_SETUP_NOT_INITIALIZED means the Windows Update Agent setup path was used before its initialization completed successfully. The actionable error is often earlier in the log.
What to do
- Find the first setup or servicing error before this code; it may be a missing prerequisite, trust problem, or pending reboot.
- Restart the device if a previous agent setup was interrupted.
- Do not attempt manual DLL registration until the underlying setup failure is understood.
Microsoft: Windows Update log files
Microsoft: Servicing stack updates
Microsoft: Windows Update error reference
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