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Windows 11 January Update KB5074109 Fails with Error 0x80073712
he 2026-01 security update (KB5074109) keeps failing with error code 0x80073712, showing "some update files are missing or have issues." Need a fix.
The error code 0x80073712 indicates that some Windows update files are missing or corrupted, which is preventing the KB5074109 security update from installing successfully.