Unable to install apps in Windows Store, error code: 0X80073CF9

Hi Narcisse,

Thank you for choosing Windows 8 as your operating system.

I see that you receive the error code: 0X80073CF9, and are unable to install apps from Windows Store.

Let us work together to resolve this issue.

I would like to inform you that this error code is usually related to a folder that’s missing and prevents apps from installing.

Method 1: Recreate the AUInstallAgent folder.

**a.**Press Windows key + R to open the Run Dialog.

**b.**Type %windir% and press Enter. You should now be in the Windows folder.

**c.**Look for a folder called AUInstallAgent. If it is missing in the Windows folder, then right click on an empty space and click on New folder.

**d.**Rename the folder as AUInstallAgent.

**e.**Restart the Computer and check if you are able to install apps.

If the AUInstallAgent folder is already available in the above mentioned location, then continue with these steps

Method 2: Reset Windows Store Cache.

Follow these steps to do so.

**a.**On the desktop, press Windows key + R to open the Run Dialog.

**b.**Type wsreset.exe and press Enter.

Method 3: Try to install the apps in Clean Boot.

To help troubleshoot error messages and other issues, you can start Windows by using a minimal set of drivers and startup programs. This kind of startup is known as a "clean boot." A clean boot helps eliminate software conflicts**.**Here is the link for your reference to perform clean boot.

http://support.microsoft.com/kb/929135

**Note:**Please go through the section: How to reset the computer to start as usual after troubleshooting with clean boot of the KB article to boot the computer in normal startup after fixing the issue.

Check if you are able to install or update the apps in Windows Store.

Please get back to us with the results.

Further reference:

Why can't I find or install an app from the Windows Store?http://windows.microsoft.com/en-IN/windows-8/why-find-install-app-windows-store

If you have any further questions regarding Windows operating systems, please reach out to us, on this forum. We are happy to assist you.