How to fix error 0x80073cf9 in Windows 10, 8.1 for good

By: Marian Cularea
4 minute read
Departments menu Microsoft Store app

When you get the error 0x80073cf9 in Windows 8 or Windows 10, it is usually when you try to install a new application from the Microsoft Store. This error code basically prevents you from installing the app and it will give you two options. You can either launch the installation process again or cancel it.
error code 0x80073cf9 in Windows 8 or WIndows 10
Unfortunately, whichever option you choose, it will not work. The error code 0x80073cf9 may also appear when you try to update an application to make it suitable for Windows 8 or Windows 10. If you try to reboot your Windows 8 or Windows 10 computer, it might work in rare cases.But if you follow the steps listed below, you will see how to permanently fix this issue and prevent it from happening again.

Fix Windows Store error 0x80073cf9

  1. Sync licenses
  2. Uninstall problematic apps
  3. Create the AUInstallAgent folder
  4. Disable your antivirus
  5. Turn off your firewall
  6. Run the Windows Store troubleshooter
  7. Use System Restore

1. Sync licenses

  1. Press and hold the “Windows” button on the keyboard.
  2. After you get to the start screen you will need to left click or tap on the “Windows Store” feature you have there.
  3. After you get to Windows store you will need to press and hold the button “Windows” and the button “I”.
  4. Left click on “App updates”.
  5. Left click or tap on the “Sync licenses here”.sync app licenses
  6. Let it do its job and reboot the Windows 8 or Windows 10 device.
  7. Try to install the app or upgrade the app and see if you still have this error message appearing.

2. Uninstall problematic apps

  1. Go to your start screen in Windows 8 or Windows 10 as you did above.
  2. Find the application you have trouble with.
  3. Right click on the application and left click or tap on the “Uninstall” store error 0x80073cf9 uninstall app
  4. Left click or tap the “Windows Store” feature on the start screen after the app is uninstalled.
  5. Enter the name of the app you uninstalled and install it again from the Windows Store.

3. Create the AUInstallAgent folder

  1. Left click on the “Desktop” icon in your start screen.
  2. Open the My Computer icon by double clicking on in.
  3. Open the partition where you have your Windows 8 or Windows 10 installed.
  4. Double click on the “Windows” folder you have in the partition.
  5. In the Windows folder, check and see if you have another folder by the name of “AUInstallAgent”.
    Note: If you don’t have the “AUInstallAgent” folder you need to right click in the “Windows” directory and create a new folder with that name.
  6. After you made the folder you need to reboot the Windows 8 or Windows 10 device.
  7. Check and see if you still have this issue.

4. Disable your antivirus

If you have an antivirus, you will need to disable it and check your apps if they install correctly afterwards. If they install correctly, then it is an issue related to your antivirus as it blocks the app installation process.

5. Turn off your firewall

Your firewall may also trigger the annoying Microsoft Store error 0x80073cf9. As a result, one of the quickest and safest solutions is to disable it. Once you’ve disabled your firewall, download and install the app that initially triggered this error code and then you can re-enable your firewall.

6. Run the Windows Store troubleshooter

If the problem persists, try running Windows 10’s built-in troubleshooter. This tool can fix general technical issues affecting your Windows Store Apps. To launch it, go to Settings > Update & Security > Troubleshooter > select Windows Store Apps and run the troubleshooter.

windows store apps troubleshooter

7. Use System Restore

For various PC problems, we recommend to use this tool.

This tool will repair most computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Quickly fix PC issues and prevent others from happening with this software:

  1. Download ReimagePlus (100% safe download and endorsed by us).
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues.

  1. Press and hold the button “Windows” and the button “X”.
  2. You will need to left click on the “System” feature you are presented on the screen.
  3. Now that you have opened the “System control panel” you need to left click on the “System protection” feature you have on the left side of that window.
  4. Left click or tap on the “System Restore” button you have in the window. 
  5. You will need to follow the instructions on the screen and select a previous restore point to bring your system settings back to how they were before you got this error message .
    Note: Before you do the system restore I suggest you write down the apps you installed after the restore point was made so that you can install them again after this process is done.

There you go, these are a few options that you can try in order to fix the error code 0x80073cf9 and get back to your daily activity. If you have any questions, let us know in the comments below.


Editor’s Note: This post was originally published in October 2014 and has been since updated for freshness, and accuracy.

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