Question

Error 0x80070643 - How to Fix It

Answer 1

Download the .NET Framework
1st step:
Step 2:
Update Windows Defender manually
1st step:
2nd step:

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With the May update of Windows 10, the error 0x80070643 also came. Most of the time, the problem lies with Windows Defender..

If you are encountering error code 0x80070643 on your computer, you are not alone with it. Because since the last major update in May 2019, many Windows users have been struggling with this error. Usually this error occurs when trying to update your system or a program.

• Download the .NET Framework
• Update Windows Defender manually

Download the .NET Framework

The .NET Framework plays an important role in the installation of system updates. If this file is not available on your computer or is damaged, problems can occur during the update:

1st step:

Open this link: https://dotnet.microsoft.com/download/dotnet-framework . Now download the latest version of the .NET Framework.

Step 2:

Then open the file, which you can usually find in your download folder , and follow the instructions of the installation wizard . After the installation is successful, restart your computer and then try to perform the update again .

Here you can read how to perform a Windows update manually.

Update Windows Defender manually

The error code is related to Windows Defender. Windows could then usually not update the program correctly. You can try to fix the error by updating the Defender yourself:

1st step:

Open this link https://www.microsoft.com/en-us/wdsi/definitions and download the file for Windows Defender . You can find this a little further down on the website.

2nd step:

Then open the file, which you can usually find in the Downloads folder . Then wait a few minutes as this is a silent installation . This means that no installation program opens, but the installation takes place in the background . Then restart and try to install the update again .

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