The error code 0x80070643 is a common issue encountered by Windows 10 users when attempting to install updates through the Windows Update feature. In 2024, the root cause is the KB5034441 update. It requires the Windows Recovery environment (WRE) to have 250MB of free disk space. This is to install the security updates.

If sufficient space does not exist, then this update will fail. Typically you will receive an error like 0x80070643 – ERROR_INSTALL_FAILURE . You need to resize the partition and install the WinRE update. You can also use a sample bat file to increase the size of the partition. Then your Windows 10 updates will install.

You can also try other methods for troubleshooting the 0x80070643 error. These may help in certain cases.

This error typically occurs during the update process and prevents the successful installation of one or more updates. The 0x80070643 error can be caused by various factors, such as corrupted update files, conflicting third-party software, incorrect system settings, or issues with the Windows Update components.

When this error appears, users may experience difficulties in keeping their Windows 10 system up to date with the latest security patches, bug fixes, and feature improvements. Resolving the 0x80070643 error is crucial to ensure the smooth operation and security of the Windows 11 operating system.

Run Windows Update Troubleshooter

  • Open the Settings app by pressing Windows key + I.
  • Navigate to System > Troubleshoot > Other troubleshooters.
  • Locate the “Windows Update” troubleshooter and click on the “Run” button next to it.
  • Follow the on-screen instructions to complete the troubleshooting process. The Windows Update Troubleshooter is a built-in tool that can automatically detect and fix issues related to Windows Update. It checks for common problems that may prevent updates from installing successfully, such as corrupted update files, incorrect settings, or service-related issues. By running this troubleshooter, you allow Windows to identify and resolve any underlying problems that may be causing the 0x80070643 error.

Reset Windows Update Components

  • Press Windows key + R to open the Run dialog box.
  • Type “cmd” and press Ctrl + Shift + Enter to open Command Prompt with administrator privileges.
  • Run the following commands one by one, pressing Enter after each command:

net stop wuauserv

net stop cryptSvc

net stop bits

net stop msiserver

ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

ren C:\Windows\System32\catroot2 catroot2.old

net start wuauserv

net start cryptSvc

net start bits

net start msiserver

Source: AI Tools.

  • Resetting the Windows Update components can help resolve issues related to corrupted update files or configuration problems. The above commands stop the Windows Update-related services, rename the SoftwareDistribution and catroot2 folders (which store update files and certificates), and then restart the services. This process essentially resets the Windows Update components to their default state, allowing them to download and install updates properly.

Install Updates Manually

  • Visit the Microsoft Update Catalog website: https://www.catalog.update.microsoft.com/
  • Search for the specific update that is failing to install (you can find the update KB number in the Windows Update history).
  • Download the appropriate update package for your Windows 10 version and architecture (x86 or x64).
  • Double-click on the downloaded update file to install it manually. If the automatic update process is failing with the 0x80070643 error, you can try installing the problematic update manually. The Microsoft Update Catalog provides a way to download individual update packages that you can install independently of the Windows Update mechanism. By manually installing the specific update that is causing the error, you may be able to bypass any issues related to the automatic update process.

Perform a Clean Boot

  • Press Windows key + R to open the Run dialog box.
  • Type “msconfig” and press Enter to open the System Configuration utility.
  • Go to the “Services” tab and check the box next to “Hide all Microsoft services.”
  • Click on the “Disable all” button to disable all non-Microsoft services.
  • Go to the “Startup” tab and click on “Open Task Manager.”
  • In the Task Manager, disable all startup items.
  • Close the Task Manager and click “OK” in the System Configuration window.
  • Restart your computer. Performing a clean boot helps isolate software conflicts that may interfere with the Windows Update process. By disabling all non-essential services and startup items, you create a minimal environment where only the core components of Windows are running. This can help identify if any third-party software or service is causing the 0x80070643 error. If the error disappears in the clean boot state, you can enable the disabled items one by one to pinpoint the problematic software.

Repair or Reset Windows 10

  • Open the Settings app by pressing Windows key + I.
  • Navigate to System > Recovery.
  • Under “Recovery options,” click on “Reset PC.”
  • Choose whether to keep your files or remove everything.
  • Follow the on-screen instructions to complete the reset process. If none of the above solutions work, you may need to consider repairing or resetting your Windows 11 installation.

Conclusion

The “Reset PC” option allows you to reinstall Windows while keeping your personal files (if chosen) or removing everything and starting fresh. This process can help resolve more complex issues, including the 0x80070643 error, by restoring the operating system to its default state. However, keep in mind that resetting your PC will remove all installed programs and settings, so make sure to back up your important data before proceeding.

Remember to always create a system restore point or backup your data before attempting any troubleshooting steps to ensure the safety of your files and system.

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