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APPX_E_INVALID_SIP_CLIENT_DATA
APPX_E_INVALID_SIP_CLIENT_DATA means that the SIP_SUBJECTINFO data used while signing the package did not contain required information. This is a signing-workflow error, not a normal certificate trust failure.
What to check
- Check the package signing code or signing tool invocation, including the package path and signing subject data.
- Use the Windows-supported package signing workflow rather than a generic Authenticode step intended for ordinary files.
- Rebuild the package before signing again so the manifest, block map, payload, and signature agree.
Preserve the detailed signing log because it can identify the missing signing input more precisely than this HRESULT.
Microsoft: troubleshoot app package signing errors
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