Fix Windows Update Error 0x80240017 - Step-by-Step Guide

Seeing error 0x80240017 means your system is hitting a wall while trying to download or install a Windows update. It is usually caused by a corrupted local cache folder or a conflict with your security software, which prevents the process from completing.

Why this happens

This error typically stems from corrupted temporary update files stored on your drive or a third-party antivirus program interfering with system processes. It rarely indicates a permanent issue with your Windows installation.

Steps

1. 01
   Navigate to Settings > System > Troubleshoot > Other troubleshooters, then click Run next to Windows Update to let the system attempt an automated repair.
2. 02
   If the error persists, open File Explorer and paste C:/Windows/SoftwareDistribution/Download into the address bar to open the cache folder. Select all files and folders inside, delete them, and restart your computer to clear out corrupted update data.
3. 03
   Search for 'cmd' in the Start menu, right-click it, and select 'Run as administrator'. Type sfc /scannow and press Enter to scan for and repair corrupted system files; restart once finished.
4. 04
   If you have third-party antivirus software like AVG or Avast, disable it or uninstall it temporarily, as these programs often block legitimate update processes.
5. 05
   If you are specifically struggling with a Visual C++ installation, uninstall any newer versions already on your machine and ensure Windows Update KB2999226 is successfully installed.

Still not working?

If you are still seeing the error after these steps, it may indicate deeper corruption within your Windows component store. Try running the Deployment Image Servicing and Management tool by typing DISM /Online /Cleanup-Image /RestoreHealth in an elevated Command Prompt. If that fails, check your Event Viewer under 'Windows Logs' > 'System' to identify specific service errors occurring at the exact time of the update failure.

Frequently asked questions

Will deleting the SoftwareDistribution folder delete my personal files?

No. This folder only contains temporary installation and update files; deleting them is a safe way to force Windows to re-download clean versions of the update.

Can third-party antivirus really cause update failures?

Yes. Some antivirus programs flag the Windows Update process as suspicious or attempt to lock files that the installer needs to modify, leading to installation errors.