If your Windows Update Agent is corrupt, you may receive errors while installing Windows Update on your Windows computer. If you ever get the following error 80073712 message while attempting to install Windows Updates, chances are CBS, also known as Windows Component-Based Servicing are corrupted. To overcome this 80073712 error, you can undertake the following actions.
Windows Update Error 80073712
Download and run the System Update Readiness Tool, and then install the updates again. The tool checks your computer for inconsistencies that try to prevent the successful installation of future updates, service packs, software, etc and tries to resolve them.
Run the Windows Update Troubleshooter and see if it helps.
If none of the above specified options work, follow these steps to run the System File Checker (SFC.exe) tool with the sfc /scannow command:
Open up the command prompt window. In it, type “Sfc /scannow” in the command box window, and press “Enter”.
Try to install the updates again.
If all of the above solutions fail, as a last resort, take the following approach – perform an in-place upgrade.
Close all the running applications, open the computer’s DVD drive and insert Windows 7 DVD, and then click “Install Now” in the Setup window.
Click “Go online to obtain the latest updates for installation” option.
Choose the version of Windows that you would want to “Upgrade” or “Inplace” in the “Install Windows” screen.
As the final step, once the installation is complete, reboot your computer and run Windows Update to check if the error is resolved.
If you cannot download and install the Windows 8.1 Update via Windows Update, you can download and install this Windows 8.1 Update package from the Microsoft Download Center, if you get Error Code 80070020, 80073712 and 0x800f081f.
Hope something helps.