MSIX Packaging Error 0x800B0100

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0x800B0100 is returned due to your app missing a signature in the subject, meaning your package is either unsigned or the signature is not valid.



You can easily correct this by reviewing the hash, and using the sign tool to sign the app.

SignTool.exe sign /fd SHA256 /a /f YourCert.pfx /p ThePFXPassword YourApp.appx




MSIX Packaging Tool

Known issues and troubleshooting tips for the MSIX Packaging Tool

Troubleshooting packaging, deployment, and query of Windows apps