0x80243001 WU_E_INSTALLATION_RESULTS_UNKNOWN_VERSION The results of download and installation could not be read from the registry due to an unrecognized data format version.
0x80243002 WU_E_INSTALLATION_RESULTS_INVALID_DATA The results of download and installation could not be read from the registry due to an invalid data format.
0x80243003 WU_E_INSTALLATION_RESULTS_NOT_FOUND The results of download and installation are not available; the operation may have failed to start.
0x80243004 WU_E_TRAYICON_FAILURE A failure occurred when trying to create an icon in the taskbar notification area.
0x80243FFD WU_E_NON_UI_MODE Unable to show UI when in non-UI mode; WU client UI modules may not be installed.
0x80243FFE WU_E_WUCLTUI_UNSUPPORTED_VERSION Unsupported version of WU client UI exported functions.
0x80243FFF WU_E_AUCLIENT_UNEXPECTED There was a user interface error not covered by another WU_E_AUCLIENT_* error code.