16 Ways to Fix Error Code 0x80070643 in Windows

 March 3, 2022

By  Rob Jhonson

Updating Windows and getting an error? It is Windows Update error 0x80070643? Check out the article to fix Windows Update error 0x80070643 with ease! 

You are not alone if your Windows machine displays the error code 0x80070643. This problem has been reported by a large number of Windows users. This problem usually happens when users try to upgrade their Windows operating system or install an application.

The KB4048955 update for Windows 10 included certain quality enhancements as well as other components that claimed to fix security flaws.

However, a glitch led customers to receive error 0x80070643 every time they attempted to install the update. Error 0x80070643 is a common Windows Update installation error number that might show up on your computer screen throughout the process. To solve this issue, we have come up with a few possible solutions that will help you to fix 0x80070643 error in Windows 10. 

But before, let’s dive into the matter a little bit and what does this error mean? What are the causes so that it will be easier for you to solve them rather than wandering around trying every possible method we have mentioned? 

What Does Windows Error 0x80070643 Mean? 

This error means that one of the updates you are trying to install has some problem. During the installation process of either your Windows or any app, the error code 0x80070643 occurs.

It might be due to a server-side issue, in which case you should reinstall the software or check your internet connection. If it doesn’t solve, check out other causes of the error and try to find out the solution below accordingly. 

What are the Causes of 0x80070643 Error in Windows 10? 

There are several causes for Windows error number 0x80070643. The following are some of the most important reasons that lead to the error 0x80070643 in Windows 10: 

  • The system configuration is incorrect.
  • Your PC is not properly turned off.
  • There is a problem with the driver.
  • Some outdated apps aren’t properly uninstalled.
  • Malware or viruses have infected your machine.
  • Some system files have been damaged or are missing entirely.

And there’s more. Knowing the causes behind this might assist you in finding the best remedies. We’ve compiled a list of beneficial options that we’ll show you below.

How to Fix Update Error 0x80070643 in Windows 10

So, here’s the compilation of the best possible ways to fix Windows update error 0x80070643. You can try the solutions as per the causes and if you are not sure what is troubling your system, try to follow every solution to fix the 0x80070643 error we have mentioned below. 

We are sure one of these methods will help you to fix error 0x80070643 in Windows 10. Have a look!

1. Reinstall the Program or Run Windows Updates again

The first thing you can try to leave your computer once you see the error on the screen. After some time, try to reinstall the app or Windows updates again

Due to unexplained reasons, this issue occasionally lasts only a few seconds. Simply try again to see if the problem goes away. If not, follow the methods below to fix error 0x80070643 in Windows 10. 

2. Remove and Reinstall the Faulty Application 

If you get the error 0x80070643 while updating an application, you can reinstall it to acquire the most recent version.

To ensure the impact, delete the software from your computer. To do so, follow the below steps: 

  1. Click on Start button (Windows icon on extreme left-hand bottom corner) and choose Settings
    Click on Settings App
  2. From Settings app, click on Apps option. 
    Choose Apps
  3. On the right pane, click the App name to expand it. Choose Uninstall to remove program from your system. 
  4. Choose Uninstall

Once the program is uninstalled from your system, go to the product’s official website to obtain the most recent setup file. Then, to reinstall the application on your computer, double-click the downloaded setup file.

Once the app is ready to run, check if the error 0x80070643 persists? 

3. Examine Your Internet Connection

A network connection to an internet server is required for some software updates and installations. Error 0x80070643 is easily caused by a problem with your network connection.

During the update/installation process, for example, you must ensure that your network is fast enough and uninterrupted.

4. Obtain the Update or Installation Files once more

Updating Windows or an application on your computer and getting 0x80070643 error code, the downloaded installation files might be damaged. Don’t be concerned. This is a simple problem to solve. You can download the installation files again and then update Windows or the software.

5. All Other programs That are Currently Running Should be Closed

Other programs on your computer that use crucial files and device sources may interfere with your Windows update or program installation.

You can shut down any other apps that are currently operating on your computer. You should also use the Task Manager to terminate any apps that are running in the background. 

To do so, follow the steps below that will help you to kill resource hogging apps using Task Manager: 

  1. Right-click on Start button. A menu will be opened, click on Task Manager
    Open Task Manager
  2. Click on Process tab, then select any app you think is creating a problem. Once selected, click on End Task button on the bottom right-hand corner. 
    Click on Process and End task

This will free up your computer’s resources and hopefully fix the error 0x80070643 in Windows 10. 

6. Turn Off Your Computer

Some issues on your computer might be resolved by restarting it. These errors might be caused by corrupted files leftover from software removal.

There might be some issues affecting the performance of your machine. To operate the device in a clean condition, simply restart your computer and this might solve the 0x80070643 error in Windows 10.

7. Run the Troubleshooter for Windows Updates

The Windows Update troubleshooter can help you identify and resolve problems that arise during the update process. Follow the below steps to fix Windows update error 0x80070643 by running Troubleshooter: 

  1. Click on Start button followed by Settings app. 
  2. Select Update & Security from the Settings menu. 
    Click on Update and Security
  3. Click on Troubleshoot on the left pane. Find and click Additional Troubleshooters on the right-hand side. 
    Click on Troubleshoot
  4. Scroll down and click on Windows Update to expand. Choose Run the Troubleshooter
    Click on Windows Update Troubleshooter

Allow the tool to identify and resolve problems. Hopefully, this will fix error 0x80070643 in Windows 10. If not, there are other solutions that you can try to fix 0x80070643 error. 

8. Better to Pause Any Other Running Downloads or Updates 

Other programs on your computer may download and update tasks that clash with the software update you wish to run. To prevent disagreements, you should do one assignment at a time.

To see whether there are any more updates available, go to Microsoft Store > 3-dot menu > Downloads and updates. If there is any running download or update, you can briefly halt them before continuing with your installation or upgrade. Remember that you should not begin another task until the present one is completed.

9. SoftwareDistributionFolder Should be Renamed

There are chances that the error is because of either corrupted MSI software update registration or the .NET framework installation of your computer.

It is suggested to rename the Software DistributionFolder in Windows. To do so, follow the steps below: 

  1. Type CMD in Task Bar Search bar. Right-click on Command Prompt and select Run as Administrator
    Open Command Prompt
  2. Type the commands in Command Prompt window listed below and press Enter after each one.
  • net stop wuauserv
  • net stop bits
  • rename c:\windows\SoftwareDistribution SoftwareDistribution.bak
  • net start wuauserv
  • net start bits

Restart your computer for the changes to take effect. See the problem persists after the restart. 

10. Download the Most Recent Version of the.NET Framework

In Windows upgrades, the.Net Framework is critical. Error 0x80070643 might occur when it is corrupted or missing.

Make sure you’re running the most recent version of the.NET Framework. You may download and install the latest.Net Framework from this website.

11. Disable your Antivirus Software for Sometime

Viruses and malware cannot infect your computer if you use antivirus software. Viruses and malware can produce the error code 0x80070643, as previously stated. You may start by scanning your computer for viruses and malware with your antivirus software.

If the findings reveal that your computer is secure, you should check whether your antivirus software is causing issues with program installation and system functionality. To rule out this option, turn off your antivirus program for sometime. 

This will hopefully do the trick and can help you to solve error code 0x80070643 in Windows 10. 

12. Update Windows in Clean Boot Mode

A clean boot will allow your computer to function with the bare minimum of drivers and starting apps.

You may update Windows in Clean Boot mode without worrying about other apps causing error 0x80070643. As a result, you may just clean boot your machine before updating Windows.

13. Manually Update Windows Defender

Want to solve error 0x80070643 in Windows 10? If you see this problem when updating Windows Defender automatically, you may try manually updating it.

Here’s how to update your Windows Defender automatically: 

  1. Go to Settings app. Click on Update & Security
  2. Click on Windows Security on left pane followed by Virus and Threat Protection on the right side. 
  3. Scroll down and click on Check for Updates under Virus & Threat Protection Updates. 
    Click on Check for Updates
  4. On the next page, click on Check for Updates once again to find if there are any updates availables. 
    Check for Updates

14. Delete the Catroot2 Folder’s Contents

It would be advisable to delete the content in Catroot 2 Folder to fix error 0x80070643 in Windows 10. To do so, follow the below commands: 

  1. Type CMD in Task Menu Search bar. Go to the Command Prompt as an admin. 
  2. Type the below commands and hit Enter after each one:
  • net stop cryptsvc
  • md %systemroot%\system32\catroot2.old
  • xcopy%systemroot%\system32\catroot2 %systemroot%\system32\catroot2.old /s

After all these commands, type this command and hit Enter: net start cryptsvc

Restart your computer and see if the problem persists. 

15. Execute an SFC Scan

Your computer’s corrupted system files can be found and repaired with an SFC scan. It’s worthwhile to give this strategy a shot to resolve 0x80070643 error. 

Open the Command Prompt and type SFC /scannow followed by Enter.

This will take some time so you don’t need to worry. You can do some other work while the computer executes SFC commands. 

16. Windows Updates Should be Installed Manually

If the error code 0x80070643 prevents Windows from updating automatically, you can manually update it. To manually update your Windows, follow the steps below: 

  1. Check the system type you’re using. For that, click on Start button and go to Settings.
  2. Click on System option from here.  
    Click on System
  3. On the right pane, click on About. Check System Type to know whether your computer is 32-bit or 64-bit. 
    Click on About and System Type
  4. Once again, go to Settings main menu. Click on Update & Security and check the code of the failed update, such as KB4023057. 
  5. Search the code you got in the previous step on this Microsoft Update Catalog website.
    Search the Missing Code

Choose the appropriate update to download as per your system configuration. Download the file to manually install the update. You need to follow the on-screen instructions after that. 

This would probably be the last step to fix Windows Update error 0x80070643. 

Final Words!

We know how frustrating is to encounter an error while doing something important on your system. It is important to find the resolution. But, now, there are so many methods that you can try to fix error 0x80070643 in Windows 10. 

You can choose the solutions as per the causes or try until the problem is not fixed. Hopefully, one of these methods will fix error code 0x80070643 in Windows 10. 

Do you know any other solution that you know to fix this 0x80070643 error? If yes, mention us in the comments section below to help our readers. 

Rob Jhonson


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