EP01: Error Encountered 0x80070643 in Windows 10 Update – How To Fix Windows Update Failed Error

Updating your Windows 10 system is crucial for obtaining the latest security patches, feature enhancements, and bug fixes. However, sometimes you might encounter errors during the update process. One common issue is the 0x80070643 error. This error can prevent Windows from installing updates properly, disrupting your workflow. In this blog post, we will explore the causes of this error and provide a detailed, step-by-step guide to troubleshoot and fix it effectively.

Common Causes of Error 0x80070643

• Corrupt .NET Framework
• Issues with Windows Update Components
• Corrupted System Files
• Antivirus or Firewall Interference
• Previous Failed Updates

Step-by-Step Solutions to Fix Error 0x80070643

1. Check and Repair the .NET Framework

Microsoft .NET Framework is commonly responsible for the 0x80070643 error. Follow these steps to repair it:

1. Press Windows + R to open the Run dialog.
2. Type control and press Enter to open Control Panel.
3. Go to Programs > Programs and Features.
4. Select .NET Framework from the list and click Change/Repair.
5. Follow the on-screen instructions to complete the repair process.

2. Run the Windows Update Troubleshooter

Windows has a built-in troubleshooter designed to fix update-related issues. Here’s how to run it:

1. Go to Settings > Update & Security > Troubleshoot.
2. Select Windows Update and click Run the troubleshooter.
3. Follow the on-screen instructions to resolve any detected issues.

3. Reset Windows Update Components

Reseting the Windows Update components can fix many update errors, including 0x80070643. Execute the following commands one by one in Command Prompt (Run as Administrator):

1. Stop the Update services: net stop wuauserv, net stop cryptSvc, net stop bits, net stop msiserver
2. Rename the SoftwareDistribution and Catroot2 folders:
   • ren C:WindowsSoftwareDistribution SoftwareDistribution.old
   • ren C:WindowsSystem32catroot2 catroot2.old
3. Restart the services: net start wuauserv, net start cryptSvc, net start bits, net start msiserver

4. Use the System File Checker (SFC) and Deployment Imaging Service and Management Tool (DISM)

Corrupted system files can also cause update errors. Use the SFC and DISM tools to repair them:

1. Open Command Prompt (Run as Administrator).
2. Type sfc /scannow and press Enter to run the SFC scan.
3. After the SFC scan completes, run the following DISM commands:
   • DISM /Online /Cleanup-Image /CheckHealth
   • DISM /Online /Cleanup-Image /ScanHealth
   • DISM /Online /Cleanup-Image /RestoreHealth

5. Temporarily Disable Antivirus or Firewall

Sometimes, antivirus software or firewalls can interfere with the update process. Temporarily disable them and try updating Windows again:

1. Open your antivirus program and find the option to disable it.
2. Turn off the firewall from Control Panel > System and Security > Windows Defender Firewall.
3. Attempt to install the updates again.
4. Remember to re-enable your antivirus and firewall after the update is complete.

Frequently Asked Questions (FAQs)

Q: What is Error Code 0x80070643?

A: Error Code 0x80070643 is a Windows Update error indicating that the update installation has failed due to various reasons like corrupt .NET Framework, system file issues, or conflicts with antivirus/firewall settings.

Q: Is it safe to disable antivirus while updating Windows?

A: Temporarily disabling antivirus and firewall can help troubleshoot update issues. However, ensure to re-enable them immediately after the update is complete to maintain system security.

Q: Can I skip Windows Updates if I keep encountering errors?

A: It is not advisable to skip Windows Updates as they contain vital security patches and system improvements. Instead, troubleshoot and resolve the errors to keep your system up-to-date and secure.

Conclusion

Error 0x80070643 during Windows 10 updates can be frustrating, but with the steps outlined in this guide, you should be able to troubleshoot and resolve it effectively. Regular system maintenance and keeping your software up-to-date are key to minimizing such issues. If the problem persists, consider contacting Microsoft Support for further assistance.