[This is preliminary documentation and subject to change.]
| Error Code | Error |
|---|---|
| ERROR_SUCCESS | initialization complete |
| ERROR_ALREADY_INITIALIZED | this engine object is already initialized |
| ERROR_INVALID_COMMAND_LINE | invalid command line syntax |
| ERROR_INSTALL_ALREADY_RUNNING | an installation is already in progress |
| ERROR_INSTALL_PACKAGE_OPEN_FAILED | database could not be opened |
| ERROR_INSTALL_PACKAGE_INVALID | incompatible database |
| ERROR_INSTALL_PACKAGE_VERSION | installer version does not support database format |
| ERROR_INSTALL_PLATFORM_UNSUPPORTED | the platform specified by the Template Summary property is not supported. |
| ERROR_INSTALL_SERVICE_FAILURE_FAILURE | install server could not be accessed |
| ERROR_BAD_CONFIGURATION | configuration data is corrupt |
| ERROR_INSTALL_UI_FAILURE | could not initialize handler interface |
| ERROR_INSTALL_LOG_FAILURE | could not open log file in requested mode |
| ERROR_INSTALL_LANGUAGE_UNSUPPORTED | no acceptable language could be found |
| ERROR_INSTALL_TRANSFORM_FAILURE | database transform failed to merge |
| ERROR_INSTALL_PACKAGE_REJECTED | digital signature rejected |