I cannot get the difference between 2 exit codes that wusa.exe may return:
0x00240005 WU_S_REBOOT_REQUIRED The system must be restarted to complete installation of the update,
Please find the description of the error codes as available in Microsoft's own CMTrace tool; particularly referring from Error Lookup (Ctrl + L) in the tool:
0x00240005: The system must be restarted to complete installation of the update. Source: Windows Update Agent
0x00000BC2: The requested operation is successful. Changes will not be effective until the system is rebooted. Source: Windows
These error codes are from different sources. First one is applicable specifically for Windows Update, whereas the second one can be applicable on any such Windows based operation where the requested operation was successful, but the changes won't be effective until reboot.
I hope this helps. And, I'd suggest you to use this tool for getting more information in this regard.
User contributions licensed under CC BY-SA 3.0