Windows Update error code 80243004 is an error that may occur when the user performs some system changes using corrupted Windows Update files.
Some of the common fixes include:
Please see our in-depth walk-through solutions below.
Solution 1. Reset Windows Update Download and scan PC
Windows Update error code 80243004 could be caused by installing Windows update using corrupt downloaded files. You may want to redo the download and scan your PC to check if a corrupt update was installed.
See link here for a YouTube video tutorial
Run DISM command and sfc /scannow command
To restore missing file and corrupt registry run DISM and SFC command. Watch it here on Youtube or see instructions below.
Solution 2. Run Windows Update Troubleshooter
If Windows Update error code 80243004 still appears, an application might help you fix the error. Run Windows Update Troubleshooter might fix the problem. See instruction below on how to use it. Also, here a Youtube guide for Windows Update Troubleshooter.