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WU_E_SETUP_TARGET_VERSION_GREATER
WU_E_SETUP_TARGET_VERSION_GREATER means the source is trying to replace a local Windows Update Agent file with an older version. Windows blocks that downgrade.
What to check
- Verify that the update source matches the operating-system version and servicing level of the client.
- Check for stale replicas, outdated installation media, or a legacy management server supplying old agent content.
- Do not force a file downgrade; use the update package that is applicable to the current platform.
Microsoft: Windows Update error reference
Microsoft: Servicing stack updates
Microsoft: Windows Update log files
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