How to Fix Windows Update error 0x80070643. [April 2020]

With the new Windows 10 2004 20H1 many users are experiencing the Windows Update Error 0x80070643 while updating their PC. As with many Windows 10 major OS upgrades in the past, it is very likely that something may cause the error 0x80070643 – 0x4000C to pop up while you are trying to upgrade to a new version of Windows 10. If that’s the case, then the following guide will be of great help to you in this regard.

Windows 10 error 0x80070643

What is Error 0x80070643:

We have already shared a tutorial on how to fix Windows 10 update error. But if you are trying to upgrade to a new version of Windows 10, such as the Fall Creators Update or newer in future, you may encounter 0x80070643 error during the upgrade process when using the Windows Update, Media Creation tool, or the Update Assistant.

0x80070643 is a common upgrade issue with Windows 10. It is not specifically related to any bug or something. The error message simply shows that an incompatible application is conflicting with the upgrade process and blocking the upgrade process.

In the following guide, you will learn steps to fix 0XC1900208 – 0x4000C as you try to install the Windows 10 Fall Creators Update or later version in future.

How to Fix error 00×80070643 on Windows 10:

This error could result due to an incompatible app installed on your system that doesn’t register during the upgrade process and thus causing it to halt in the middle. Or, in most likely case, the problem might surface due to a security software blocking the upgrade.

So if you are using an a third-party antivirus tool other than the Windows Defender, or any other security software, then disable it or uninstall it temporarily before upgrading Windows 10 to a new version on your computer.

Moreover, sometimes older software that are designed to run on older version of Windows are not compatible to run with Windows 10, so they end up creating issues during the upgrade process. So make sure to uninstall older, incompatible software before upgrading to a new version. You can reinstall them once the upgrade is complete.

There are two ways to uninstall applications on Windows 10: Using Control Panel and the Settings app.

Note: Make sure that you have backed up application/software data and have a product key with you so that it can be restored after the upgrade.

How To Uninstall Windows 10 Apps using Settings:

1- Open Settings.

2 – Click on Apps.

3 – Click on Apps & features.

4 – Select the app that you wish to uninstall.

5 – Click on the Uninstall button under the selected app and follow on-screen instructions to complete the process.

How To Uninstall Windows 10 Apps using Control Panel

1 – Open Control Panel.

2 – Click on Uninstall a program link.

3 – Select the app.

4 – Click the Uninstall button, follow the on-screen directions to complete the process.

5 – All done.

If you don’t know exactly which app is not allowing the upgrade process to go through, then the best course of action is to uninstall your antivirus and other third-party security software, and then start the upgrade process. Still if the problem remains, then try to uninstall rarely used or old applications that you think may be the main hindrance.

However, if none of the above solutions works, then the last fix is to reset Windows 10 or clean install it on your device that will revert it back to factory settings and undoes any settings or corrupted file that may be causing the issue in the first place.


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