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WU_E_SETUP_ALREADYRUNNING
WU_E_SETUP_ALREADYRUNNING means a second Windows Update Agent setup invocation was attempted while another agent setup operation was still active.
What to check
- Wait for the active setup or servicing task to finish before retrying.
- Check for overlapping deployment jobs, scheduled maintenance, or automation that starts update operations in parallel.
- If no active operation remains, reboot and inspect the log for the process that did not release its setup state.
Find the competing setup owner
This code is in the WU_E_SETUP_* range for Windows Update Agent setup, not the ordinary update-installation range. A deployment system should record the process or maintenance job that initiated WUA setup and serialize that work across its agents. Starting a second setup process cannot accelerate an already active update of the agent.
If the status remains after the expected setup process exits, inspect Windows Update logs for the setup phase and reboot state before deleting update data. A pending reboot or a failed setup handler has its own documented HRESULT and should remain visible. Rebooting may clear a genuinely abandoned setup state, but the earlier setup failure still needs to be retained for root-cause analysis.
References
References
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