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Tech Me Engineer > Computer > How to Fix Windows Update Error 0x80070643?
Computer

How to Fix Windows Update Error 0x80070643?

Ramesh Pradhan
Last updated: 2025/01/21 at 4:10 PM
Ramesh Pradhan
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Hi guys welcome to the next important article. Today we will talk about how to fix Windows update error 0x80070643 in your operating system.

Table of content
What is 0x80070643  Errors?How to Fix Error 0x80070643?Re-Try or Re-Updating the windowsRestart Windows Installer ServiceInstall the Update ManuallyTemporarily Disable AntivirusRepair .NET FrameworkRun System File Checker (SFC) and DISM ToolClean BootCheck for MalwareFAQs0Is KB5034441 necessary?How do you turn off Windows 11 updates?How can I roll back a Windows update?

This is very difficult to solve the error but you will easily fix it after seeing this particular post. If you like please comment share and like.

Up to date is very very necessary in this period. So if you are going to update Windows OS in your system this type of error occurs that will be necessary to fix.

Don’t worry about that I am with you!

If you are trying to install new windows in your system 0x80070643 errors happen but we need to fix it to run windows os properly.

The following steps are suitable for Windows 11, windows 10, windows 8, and Windows 7 Operating systems.

What is 0x80070643  Errors?

The 0x80070643 error is a common Windows error code that typically appears when there’s a problem with installing or updating software on your computer.

windows update error 0x80070643

It can occur for various reasons, but some of the most frequent causes include: [0x80070643]

  1. Corrupted System Files
  2. Issues with Windows Update
  3. Microsoft .NET Framework Problems
  4. Antivirus Interference
  5. Incomplete or Corrupted Previous Installations (0x80070643)

How to Fix Error 0x80070643?

I have given the complete steps below if I had this problem and I also followed these steps to solve my problem. I hope you will be successful in fixing error 0x80070643:

Re-Try or Re-Updating the windows

We should not think that any work can get results at one time, sometimes we have to repeat it, so we should not worry if it is not installed or updated at the same time. That work should also be re-tried or updated. This is why our WINDOWS error 0x80070643. We can fix it. Run Windows update troubleshooting:

  • Open Settings by pressing Win + I.
  • Go to Update & Security.
  • Click on Troubleshoot in the left pane.
  • Select Additional troubleshooters.
  • Click on Windows Update and then Run the troubleshooter.
  • Follow the on-screen instructions.

Restart Windows Installer Service

Sometimes windows automatically generates the Windows error 0x80070643. So we need to restart Windows installer services to properly install Windows:

  • Press Win + R to open the Run dialog box.
  • Type services.msc and press Enter.
  • Locate Windows Installer in the list.
  • Right-click on Windows Installer and select Restart.
  • If the service is not running, right-click and select Start.

Install the Update Manually

  • Go to the Microsoft Update Catalog.
  • Search for the update that is failing.
  • Download the update file matching your system architecture (e.g., x64, x86).
  • Run the downloaded file to install the update manually.

Temporarily Disable Antivirus

If you have any kind of antivirus in your Windows operating system that affects to installation and updating of Windows. This is also a common step to fix error 0x80070643. Follow the following instructions to disable Antivirus temporarily in your system.

  • Open your antivirus software.
  • Locate the option to disable it temporarily.
  • Disable the antivirus and attempt to update again.
  • Remember to re-enable your antivirus after the update is complete.

Repair .NET Framework

  • Press Win + X and select Apps and Features.
  • Find Microsoft .NET Framework in the list.
  • Click on it and select Modify.
  • Choose Repair and follow the on-screen instructions.
  • Restart your computer after the repair process is complete.

Run System File Checker (SFC) and DISM Tool

  • Press Win + X and select Windows PowerShell (Admin).
  • Type sfc / scannow and press Enter.
  • Wait for the scan to complete and follow any on-screen instructions.
  • After the SFC scan, type DISM /Online /Cleanup-Image /RestoreHealth and press Enter.
  • Wait for the DISM tool to complete its scan and repair process.

Clean Boot

A clean boot is a troubleshooting technique that allows you to start Windows with a minimal set of drivers and startup programs.

This can help determine whether a background program or service is causing the 0x80070643 error. Here are the detailed steps to perform a clean boot:

  • Press Win + R to open the Run dialog box.
  • Type msconfig and press Enter.
  • Go to the Services tab.
  • Check the box for Hide all Microsoft services.
  • Click Disable All.
  • Go to the Startup tab and click Open Task Manager.
  • Disable all startup items.
  • Close Task Manager and click OK in the System Configuration window.
  • Restart your computer and try to update again.

Check for Malware

This is also a very necessary step to fix the error. Sometimes malware generates this type of error in your system. so that you have to check for malware in your os to fix it.

  • Run a full system scan using your antivirus software.
  • Use additional tools like Malwarebytes to ensure your system is clean.

This is a complete guide to fix Windows update error 0x80070643. Maybe your problems also be solved by this post. If you like please share with others. Thank you.

FAQs0

Is KB5034441 necessary?

KB5034441 is a Windows update that includes important security patches and bug fixes. Installing it is recommended to keep your system secure and running smoothly

How do you turn off Windows 11 updates?

To turn off Windows 11 updates, go to Settings > Windows Update > Advanced options > Pause updates. You can pause updates for up to 35 days. For a more permanent solution, you can disable the Windows Update service via the Services app.

How can I roll back a Windows update?

Open Settings.
Go to Update & Security.
Select Windows Update.
Click View update history.
Choose Uninstall updates.
Select the update you want to remove and click Uninstall.
Follow the on-screen instructions to complete the process.

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By Ramesh Pradhan
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Hi, My Name is Ramesh Pradhan. I am qualified as a Civil engineer From Nepal. I am Working in the Reputed Building Construction Company in Nepal. I am also the CEO and Co-Founder of the "Tech Me Engineer" Website. I am Working on the Construction information, AutoCAD, Autodesk, Estimation, Irrigation, Computer, and Related Field on this Website. "THANKS to VISIT"
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