How To Fix Windows Update Error 0x80070643 (2024)

Windows Update Error 0x80070643 is an issue that can prevent your computer from updating correctly.

This article will explore some of the possible causes and solutions for this problem. We will also provide a few workarounds you can try if you are having trouble updating your computer.

What is Error 0x80070643?

When installing updates, your machine might suddenly display the 0x80070643 error message and automatically restart. Other times the installation process will proceed without any apparent glitches, but later, you will notice the error message next to all updates attempted on the Windows Update section on your computer. The error message in full reads as follows:

There were problems installing some updates, but we’ll try again later. If you keep seeing this and want to search the web or contact support for information, this may help:

[Brief description of failed update] – Error 0x80070643

The question on your mind is probably what causes the 0x80070643 error. The answer isn’t simple. It could be malware or virus infection, corrupted files, a driver malfunction, or even remnants of an old program uninstalled from your machine.

If it’s for any of these reasons, the only way to get around the problem is to try different troubleshooting methods until you find one that works for you.

Fixing the Errror

Retry the Installation

If you receive the error code 0x80070643 when trying to install a Windows Update, the first thing you should do is retry the installation. Sometimes, the installation can fail for unknown reasons, but a second attempt might be successful.

Run the Windows Updates Troubleshooter

If retrying the installation doesn’t work, you can try running the Windows Updates Troubleshooter. This is a tool that Microsoft provides to help solve problems with Windows Updates.

To run the troubleshooter:

1. Press the Windows key on your machine and type in “Troubleshoot.”
   
2. Click on the “Open” button next to “Troubleshoot Settings.”
   
3. Select “Additional Troubleshooters”
   
4. From the sidebar on the left-hand side of the window, select “Most Frequent” and then click on the “Run the troubleshooter” button.
   

Install the Updates in Safe Mode

When installing windows, some people prefer to do so in Safe Mode. This is because Safe Mode is designed to load only the most essential drivers and services, which can help to prevent any incompatible software from causing problems. In addition, running the installation in Safe Mode can help to ensure that all the necessary files are copied correctly.

Another reason to install updates in Safe Mode is that it can help to resolve driver conflicts. Sometimes, two different drivers can conflict, causing problems with your system. In Safe Mode, some drivers are not run at all. This minimizes the risk of conflict.

Here’s how to engage the Safe Mode on Windows:

1. Restart your computer.
   
2. Hold the Shift key while clicking the Restart button.
   
3. Select Troubleshoot > Advanced Options > Startup Settings >Restart.
   
4. Once your PC restarts, it should display a list of options. Select 4, F4, or Fn+F4 (depending on the on-screen instructions) to start the PC in Safe Mode.
   

Once Windows has started in Safe Mode, open Settings, click on “Updates & Security,” and click on “Update now.”

Close All Other Programs

The Windows Update Error 0x80070643 may be caused by any programs currently running on your computer. These programs can interfere with the Windows update process. As such, you should close them all and try again.

The most likely culprits are email clients, web browsers, and word processors. These programs access the internet and can potentially interfere with the update process. To close them, right-click on their icons in the taskbar and select “Close.”

If you’re unsure which programs are running, open the Task Manager by pressing Ctrl+Shift+Esc and look for programs with a “Running” status. Close them all and try again.

Check Your Internet Connection

One of the most common causes of Windows update errors is a poor internet connection. When you try to update your Windows operating system, it needs to download files from Microsoft’s servers. If your computer is not connected to the internet, or if your connection is too slow or unreliable, it can cause the update process to fail.

Another common cause of errors is a problem with your network router. If your router is not working properly, it can block the connection between your computer and Microsoft’s servers. To fix this problem, ensure your computer is connected to the internet and your router is working properly.

Install the Latest .NET Framework

The Windows Update Error 0x80070643 may be caused by a missing or outdated .NET Framework component.

The .NET Framework is a software development platform used to create Windows-based applications. It provides a set of tools and libraries that developers can use to build applications. The .NET Framework also includes a runtime environment that executes the code written in the .NET languages.

A missing or outdated .NET Framework component can cause the Windows Update Error 0x80070643. To resolve this issue, install the latest version of the .NET Framework. You can download the latest version from the Microsoft Download Center. Once you have installed the latest version, restart your computer, and then try to update Windows again.

Perform an SFC Scan

One way to resolve the error code 0x80070643 is to perform an SFC (System File Check) scan. This will scan your system for corrupt files and attempt to repair them.

To do this:

1. Open the Command Prompt as an administrator and type “sfc /scannow“.
   
2. Once the scan is complete, restart your computer and try installing the updates again.
   

Restart Windows Installer

Another potential cause of the 0x80070643 error is a glitch in the Windows Installer.

To restart the Windows Installer:

1. Go to Windows Services and select Windows Installer to highlight it.
   
2. Click on the Restart button.
   

This may fix the issue and allow you to continue with your installation.

Scan for Malware

Installing Windows updates can be difficult if your system has malware.

Malware is a type of software that is designed to damage or disrupt a computer system. In some cases, malware can generate an error message like 0x80070643 to prevent the user from installing certain files or applications. In other cases, the malware may simply cause your computer to crash.

If you suspect your computer is infected with malware, running a scan with a reputable anti-malware program is important.

Disable Your Antivirus Program

Windows update problems can be caused by a conflict between your antivirus software and the Windows Update service. To resolve this issue, you will need to disable your antivirus software temporarily and then try to run the Windows Update service again.

Once the update is complete, you can re-enable your antivirus software.

Get Your Operating System Updating Again

The Windows Update Error 0x80070643 is a very common error when trying to update Windows. This error is usually caused by a corrupt or damaged Windows Update file. Luckily, you can do a few things to fix this problem.

We recommend starting with simple troubleshooting measures like restarting your machine before moving on to the more complex methods like performing an SFC scan or installing a new .NET Framework.

Have you experienced the Windows Update Error 0x80070643 on your computer? How did you get around it?

Feel free to share tips and tricks with other users in the comments.