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WU_E_REPORTER_EVENTCACHECORRUPT
WU_E_REPORTER_EVENTCACHECORRUPT means the reporter component found its event cache in an invalid state. Reporting or compliance events may be delayed or incomplete even if download and installation still work.
What to check
- Preserve the relevant logs first, then identify the reporter component and the first corruption-related entry.
- Verify whether the condition is limited to reporting history or also coincides with update scan and installation failures.
- Use a documented Windows Update repair procedure appropriate to the device version instead of manually editing cache databases.
Microsoft: Windows Update log files
Microsoft: Windows Update common errors and mitigation
Microsoft: Windows Update error reference
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