Quick Summary
Error code 0x80073CF9 in Windows typically indicates that an app installation failed due to issues with file system permissions or corruption within the Windows Store cache. This can prevent new apps from installing or existing apps from updating correctly.
Common Causes
- Corrupted Windows Store Cache: The Windows Store cache stores temporary files used for installing and updating apps. If this cache becomes corrupted, it can lead to installation errors.
- Incorrect File System Permissions: The user account may not have the necessary permissions to access or modify files in the WindowsApps folder, which is where apps are installed.
- Antivirus or Firewall Interference: Antivirus software or firewalls can sometimes mistakenly block the installation process, leading to this error.
- Operating System Corruption: Damaged or missing system files can prevent the Windows Store from functioning correctly.
- Conflicting Software: Incompatibilities with certain applications can sometimes trigger this error during installation.
Step-by-Step Fixes
Method 1: Reset the Windows Store Cache
Step 1: Press the Windows key + R to open the Run dialog box.
Step 2: Type wsreset.exe and press Enter.
Step 3: A blank Command Prompt window will open. Wait for it to close automatically. This indicates the cache has been reset.
Step 4: Try installing the app again.
Method 2: Run the Windows Store Apps Troubleshooter
Step 1: Press the Windows key + I to open the Settings app.
Step 2: Go to Update & Security > Troubleshoot.
Step 3: Click on Additional troubleshooters.
Step 4: Select Windows Store Apps and click on Run the troubleshooter.
Step 5: Follow the on-screen instructions and apply any recommended fixes.
Method 3: Check File System Permissions
Step 1: Open File Explorer and navigate to C:\Program Files.
Step 2: Right-click on the WindowsApps folder and select Properties.
Step 3: Go to the Security tab.
Step 4: Click on Edit to change permissions.
Step 5: Click Add, type Everyone, click Check Names, and then click OK.
Step 6: Select the new Everyone group and ensure that Read & Execute is checked. If 'Write' is enabled, uncheck it.
Step 7: Click Apply and OK twice.
Step 8: If you encounter an error saying you do not have permission, you may need to take ownership of the folder. To do that, at the properties window, select Advanced under the Security tab. then, next to 'Owner' click Change. Follow the prompts to take ownership, and then re-do steps 5-7.
Step 9: Restart your computer.
Method 4: Disable Antivirus/Firewall Temporarily
Step 1: Temporarily disable your antivirus software or firewall.
Step 2: Attempt to install or update the app again.
Step 3: If the installation is successful, re-enable your antivirus/firewall. If the problem persists, consider adding an exception for the Windows Store in your antivirus/firewall settings.
Method 5: Run System File Checker (SFC)
Step 1: Open Command Prompt as an administrator (search for cmd, right-click, and select Run as administrator).
Step 2: Type sfc /scannow and press Enter.
Step 3: Wait for the scan to complete. This may take a while.
Step 4: Restart your computer after the scan is finished.