Software⏱️ 3 min read📅 2026-06-11

How to Fix Error 80073712 Error – Cannot install Windows 8.1 Update Kb2919355. Windows Update Error 80073712

Windows Update Error 80073712 prevents installation of KB2919355 update on Windows 8.1 Pro x64.

Quick Answer: Try running the Windows Update Troubleshooter or using the Microsoft Fix it tool to resolve the issue.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. 🔧 Proven Troubleshooting Steps
  3. ✨ Wrapping Up

The error 'Windows Update Error 80073712' occurs when attempting to install Windows 8.1 Update Kb2919355, causing frustration for users who want to stay updated with the latest security patches and features.

This issue affects Windows 8.1 Pro x64 users who have missed out on the automatic update on April 9th and are now struggling to manually install the updates using Windows Update or standalone tools.

🛑 Root Causes of the Error

  • The primary root cause of this error is a corrupted system file, which can be caused by various factors such as a faulty installation, software conflicts, or malware infections. Running the built-in System File Checker (SFC) tool may not always identify and fix the issue, especially if the corruption is more severe.
  • Another possible reason for this error is an incompatibility issue with the Windows Update service, which can be caused by a misconfigured registry key, a corrupted Windows Update cache, or a conflict with other system services.

🔧 Proven Troubleshooting Steps

Manually installing updates using the Microsoft Download Center

  1. Step 1: Download the standalone update utility for KB2919355 from the Microsoft Download Center (https://support.microsoft.com/en-us/help/2919355/windows-8.1-update-kb2919355).
  2. Step 2: Extract the downloaded zip file to a temporary folder, such as C:\temp.
  3. Step 3: Navigate to the extracted folder and run the update utility (KB2919355.exe) to initiate the installation process.
  4. Step 4: Follow the on-screen instructions to complete the installation process. If prompted, restart your computer to ensure the updates are fully applied.

Using the Windows Update Troubleshooter

  1. Step 1: Open the Control Panel and navigate to the 'Troubleshooting' section.
  2. Step 2: Click on 'View all options' and select 'Windows Update'.
  3. Step 3: Follow the prompts to run the built-in Windows Update Troubleshooter, which may help identify and fix any underlying issues causing the error.
  4. Step 4: If the troubleshooter fails to resolve the issue, you can try restarting your computer in Safe Mode to disable any conflicting services or applications.

✨ Wrapping Up

To resolve the 'Windows Update Error 80073712' issue, we recommend trying one of the two primary fix methods: Manually installing updates using the Microsoft Download Center or Using the Windows Update Troubleshooter. If these methods fail, further troubleshooting may be necessary to identify and address any underlying system issues.

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