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APPX_E_INVALID_DELTA_PACKAGE
APPX_E_INVALID_DELTA_PACKAGE means that the delta update package does not satisfy the app package requirements. The detailed failure may involve the baseline relationship, file set, metadata, or signature.
Recommended approach
- Capture the detailed packaging or deployment event because this HRESULT is a top-level delta validation result.
- Regenerate the delta from clean, signed baseline and updated packages.
- Validate the published delta independently before offering it to clients.
Do not diagnose this as a generic installation failure; verify the delta generation and release pipeline first.
Microsoft: troubleshoot Windows app packages
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