Q: Can't delete Apple software update

Hello Kowhai196, 

If I’m understanding you right, you're trying to uninstall iTunes, as well as it's components, but you keep receiving an error telling you the configuration data is corrupt when removing the Apple Software Update component. I know how challenging it can be when software errors arise that don't seem to make sense so I can see why you'd reach out for help with this today. 

The issue you're experiencing is usually due to a problem with your Windows software, typically involving the "registry" which is a database in Windows that contains important information about system hardware, installed programs and settings, and profiles of each of the user accounts on your computer. To begin troubleshooting this, you want to first make sure you're signed into an Administrative user account on your PC. Use the steps in the following Microsoft article to verify you're logged in as an Administrative user:

How do I log on as an administrator?

Next, follow the troubleshooting steps in the article listed below. Don't be alarmed that the article itself lists steps said to be for an error message that is different than the one you're receiving since the steps are the same regardless. 

If you see a "Windows installer package" error message when you try to uninstall iTunes from your PC

If you're still experiencing difficulties uninstalling the Apple Software Update iTunes component, the next step would be to reinstall iTunes on your PC and then attempt to uninstall it again. When uninstalling iTunes the second time, make sure to follow the steps listed in the article below. It's very important you follow those steps exactly as written, making sure to remove iTunes and it's components in the specific order outlined in the article. 

Download iTunes for Windows

Remove and reinstall iTunes and related software components for Windows 7 and later

Thank you for using Apple Support Communities. 

Have an awesome day!