Forum Discussion
Microsoft MSIX Packaging Tool Fails to create package due to AppXManifest (Typelib/Version/LibFlag)
The MMPT will fail to save the package after capturing an installation of Altova XmlSpy Enterprise. This is due to the MMPT reading a reading a registry string value for a Com Version and adding it into the AppXManifest in an incorrect form that violates the COM schema extension validation ST_VersionCom.
The error from the MMPT log:
[11/10/2025 11:17:46 AM] [Debug] MakeAppx : error: Failure at packageWriter2->Close( manifestStream, contentGroupMapStream.Get()) - 0x80080204 - The specified package format is not valid: The package manifest is not valid.
[11/10/2025 11:17:46 AM] [Debug] MakeAppx : error: Error info: /*[local-name()="Package" and namespace-uri()="http://schemas.microsoft.com/appx/manifest/foundation/windows10"]/*[local-name()="Extensions" and namespace-uri()="http://schemas.microsoft.com/appx/manifest/foundation/windows10"][1]/*[local-name()="Extension" and namespace-uri()="http://schemas.microsoft.com/appx/manifest/com/windows10"][1]/*[local-name()="ComInterface" and namespace-uri()="http://schemas.microsoft.com/appx/manifest/com/windows10"][1]/*[local-name()="TypeLib" and namespace-uri()="http://schemas.microsoft.com/appx/manifest/com/windows10"][2]/*[local-name()="Version" and namespace-uri()="http://schemas.microsoft.com/appx/manifest/com/windows10"][1]/@LibraryFlag
[11/10/2025 11:17:46 AM] [Debug] '#0' violates pattern constraint of '[0-9a-fA-F]'.
[11/10/2025 11:17:46 AM] [Debug] The attribute 'LibraryFlag' with value '#0' failed to parse.
[11/10/2025 11:17:46 AM] [Debug] Cleaning up output file "\\?\%UserProfile%\Desktop\Altova-XmlSpy_28.0.0.0_x64__xwfzvwzp69w2e.msix".
[11/10/2025 11:17:46 AM] [Debug] MakeAppx : error: Failure at (CreatePackage( overwrite, hashAlgorithm, fileList, outputPath, manifestStream.Get(), forceCompressionNone, performanceOptions, encryptPackage, encryptionOptions, cgmPath, mainPackagePathForResourceExemption, makepriExeFullPath)) - 0x80080204 - The specified package format is not valid: The package manifest is not valid.
[11/10/2025 11:17:46 AM] [Debug] MakeAppx : error: Package creation failed.
[11/10/2025 11:17:46 AM] [Debug] MakeAppx : error: 0x80080204 - The specified package format is not valid: The package manifest is not valid.
[11/10/2025 11:17:46 AM] [Error] MakeAppx.exe failed, exit code = 1
[11/10/2025 11:17:46 AM] [Error] Error Finalizing Package: Process MakeAppx.exe failed with exit code 1.
The values in the registry placed by the application that were captured:
And the produced AppXManifest file contained: