What does Windows error code 14074 (ERROR_SXS_PROTECTION_RECOVERY_FAILED) mean?

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: Assembly Protection Error : Unable to recover the specified assembly.

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ERROR_SXS_XML_E_MISSINGEQUALS	ERROR_SXS_PROTECTION_PUBLIC_KEY_TOO_SHORT

ERROR_SXS_PROTECTION_RECOVERY_FAILED

ERROR_SXS_PROTECTION_RECOVERY_FAILED — Windows could not recover a protected Side-by-Side assembly.

Assembly protection recovery failed while Windows was trying to restore a protected component. This points to a damaged or incomplete protected assembly, catalog, or component-store state.

Treat the first related SideBySide, CBS, or servicing error as the main lead. Repeatedly copying files into WinSxS can make the component store less consistent.

What to check

Record the affected assembly name from the event log or sxstrace output.
Run a component-store health scan before attempting a repair.
Use a supported repair source if DISM reports that it cannot obtain the required files.

DISM /Online /Cleanup-Image /ScanHealth

DISM /Online /Cleanup-Image /RestoreHealth

Microsoft: Repair a Windows image

Microsoft: System File Checker

Microsoft: sxstrace

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