Another reason could be that the application you want to update is running in the background, which prevents the update process from completing and results in the error code 0x80073CF9 in the Microsoft Store. Since we’ve discussed the causes, let’s explore the solutions to fix this issue.
1. Create an AUInstallAgent folder in the Windows Directory
The AUInstallAgent folder is necessary for managing app updates and installations. Since its absence is one of the main causes of the issue, manually creating this folder in the Windows directory can restore the necessary files required for app updates.
2. Reset the Microsoft Store Cache
Resetting the Microsoft Store cache clears temporary files, such as cached data that may become outdated or corrupted, causing the app installation to fail. Refreshing the store’s cache restores its functionality and can help resolve the issue.
3. Terminate the App and Try Again
Several users have reported that terminating the app you’re trying to update before starting the update process resolves error 0x80073CF9. This ensures no instances of the app are running in the background, which could interfere with the update.
4. Reinstall the Microsoft Store app
Problematic files associated with the Microsoft Store app can also cause this error. Reinstalling the Microsoft Store will restore any corrupted files and reset the app to its original state, potentially resolving the error.
5. Perform an In-Place Upgrade
If the issue persists, performing an in-place upgrade is one of the most effective ways to resolve it. This method is beneficial as it does not uninstall your apps or data on your Windows system. Alternatively, you can create a new user account and transfer your data from the previous account to the new one. This option is recommended if you do not want to perform an in-place upgrade.
