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ERROR_UNKNOWN_COMPONENT
ERROR_UNKNOWN_COMPONENT means that Windows Installer could not resolve the requested component identifier. MSI components are identified separately from products and features, so a valid ProductCode does not make every component reference valid.
What to check
- Verify the component GUID or identifier passed to the MSI API and the installation context used for the lookup.
- Confirm that the product which publishes the component is actually installed or advertised as required by the operation.
- For package authors, compare the Component table and related feature mapping with the identifier used by the application.
Microsoft: Windows Installer error codes · Microsoft: Installer function reference
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