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WU_E_UH_DECRYPTFAILURE
WU_E_UH_DECRYPTFAILURE means the install handler reached the payload but could not decrypt it successfully. The content may be corrupted, incomplete, or mismatched with the metadata or trust chain expected by the update.
What to verify
- Check whether the download stage previously reported hash, signature, or content-change problems.
- Ensure the device time and servicing trust infrastructure are healthy, then reacquire the content from the original source.
- Avoid manually copying update files between machines unless the entire trusted package set is preserved.
Microsoft: Fix Windows Update corruptions and installation failures
Microsoft: Windows Update log files
Microsoft: Windows Update error reference
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