The error code "windowsupdate_00009c48" often occurs when a particular update, like Internet Explorer, is already installed or partially installed. Here’s a workaround you can try:
Check for Duplicate Installations: Go to Control Panel > Programs > View installed updates. Look for any duplicate entries, especially regarding Internet Explorer, and uninstall them.
Reset Windows Update Components: Use the Microsoft Fix It tool or manually reset the update components by following guidance from Microsoft's official site.
Manual Update: You can manually download and install updates from the Microsoft Update Catalog. Just search for the specific KB number related to the failed update.
These steps should help resolve the issue. If problems persist, a deeper look into the Windows Update log files might pinpoint the exact cause.