Error 0x80073CF9

How to Fix Microsoft Store App Install Failure 0x80073CF9

Fix time: 10 mins Difficulty: Easy 0 views Updated: July 2026

Resolve app installation and package deployment errors on Windows.

Symptoms

Microsoft Store shows download error 0x80073CF9

Common Causes

Missing AUInstallAgent folder in Windows system root

Step-by-Step Solutions

Method 1: Re-create AUInstallAgent Directory

Open file explorer and go to C:\Windows.
Check if folder named AUInstallAgent exists. If not, create it.
Reboot computer.

Frequently Asked Questions

Yes, re-register all Store apps using Get-AppxPackage cmdlet.