Windows & BSOD · medium

How to fix0x80073CF9

0x80073CF9 - Store App Installation Failure

What this error means

0x80073CF9 - Store App Installation Failure ranks as a medium-severity Windows operating system issue in our database. The app package installation failed due to missing package directories or corrupted store database records. Commonly occurs when updating or installing games/applications from the Microsoft Store. It's most often caused by incorrect Windows system time or region settings and background update installer service blockages. The steps below are ordered to resolve this efficiently.

Before you begin

Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 4 complete
01Recreate the AUInstallAgent directory in Windows

Recreate the AUInstallAgent directory in Windows.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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02Reset Microsoft Store via WSReset utility

Reset Microsoft Store via WSReset utility.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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03Synchronize Windows time and timezone settings

Synchronize Windows time and timezone settings.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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04Run the Windows Store App Troubleshooter

Run the Windows Store App Troubleshooter.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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Possible causes

  • Missing AUInstallAgent system directories
  • Corrupted Microsoft Store download cache files
  • Incorrect Windows system time or region settings
  • Background update installer service blockages