How to fix Windows 10 update error code 643

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Catherine Le Nevez
@catherinelenevez
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support.microsoft.com

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Windows 10 is an ever-evolving operating system platform that keeps introducing updates from time to time to enhance your overall experience. It continues to present several features to simplify the use of the platform, as well as security features to protect the system from any malicious attack.

However, errors may occur many times that prevent you from downloading and installing updates. One such error is the Windows update error code 643. This is a common error that occurs mainly due to a damaged .NET framework. However, you can also see the error due to software conflicts.



The good news is that the Windows update error code 643 can be easily fixed using the following methods. Let's see how.

Method 1: Using the Windows Update Troubleshooter via the Settings app

Step 1: For those on Windows 10 they can run the update troubleshooter via settings application. For this, go to Home on the desktop, click on it and select settings (Gear icon) in the context menu, located above the file energia option.

Step 2: A settings window, click Update and security.

Step 3: In the next window, click Solve problems on the left side of the panel. Now on the right side of the window, scroll down and select Additional troubleshooting tools.

Step 4: A Additional troubleshooting tools window below Start section, go to Windows update and click Run the troubleshooter.


Now wait until you detect the problem and help you fix it, if any. Now restart your PC and try to download and install the update, it should work fine. If it still shows the error, try the second method.



Method 2: reinstall the .NET Framework

Step 1: Leave Google and search.download net framework for windows 10. Click to open the first result.

Step 2: On the download page, go to the download section and select the latest version to download. The latest download is always recommended.

Now follow the instructions to continue with the download and installation.

Restart your PC and the Windows update error code 643 should be gone and fixed. You can now install your updates as usual.

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