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ERROR_INSTALL_LANGUAGE_UNSUPPORTED
ERROR_INSTALL_LANGUAGE_UNSUPPORTED means that Windows Installer could not select a supported language for the package or transform. It is a package-language compatibility problem, not a general display-language error.
What to check for ERROR_INSTALL_LANGUAGE_UNSUPPORTED
- Verify the language and transform resources distributed with the exact package version.
- Check the target system locale and the language requirements documented by the product vendor.
- For package authors, test language transforms and fallback behavior on supported target configurations.
Microsoft: Windows Installer error codes · Microsoft: initialization errors
Where the result is returned
This result is Win32 system error 1623 (0x00000657) from winerror.h. AllStat describes it as “The language of this installation package is not supported by your system.”
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