Windows Update - error 0x80070643

Hi Clement,

I understand that you are getting error code 0x80070643 while you try to install Windows Updates.

This error occurs if .Net Framework is corrupt.

To fix the issue, please try to run the .Net Framework repair tool and check if that helps.

https://www.microsoft.com/en-us/download/details.aspx?id=30135

Please try the above suggestion and reply us with the results so that we can help you further.

Hi,

Thanks for this quick answer, but unfortunately the .Net Framework repair tool couldn't fixe the erro and sent logs to Microsoft.

Have you got other ideas ?

Best regards.

Hi Clement,

Thank you for the reply.

Please try the method below and test the issue.

Reset Windows Update components and test the issue.

I suggest you to reset Windows Updates Components. Resetting Windows Update Components and the Windows Update files helps to fix Windows Update errors.

http://support.microsoft.com/kb/971058

Disclaimer: Important this section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs.

Backup the registry: http://support.microsoft.com/kb/322756/en-us

Note: To reset the computer to normal mode after troubleshooting, please refer to “How to reset the computer to start as usual” from the above article.

Please try the above suggestion and let us know the status of the issue.

Hi,

Firstly, I tried to reset Windows Update components automatically with the .cab but It said that the software couldn't do it. Then I tried to do it manually and it failed to.

Any others suggestions ?

Regards.

Hi Clement,

I request you to share the screenshot of the error you are getting while resetting Windows Update components.

Take a screen capture (print your screen)

Refer: http://windows.microsoft.com/en-us/windows/take-screen-capture-print-screen#take-screen-capture-print-screen=windows-8

Thank you.

Hi,

I ran a second time the utility resetting Windows Update, I'm not getting error anymore and the software said that it have corrected all the issue. But in Windows Update I still have the 0x80070643 error.

Hi Clement,

Thank you for updating to us about the issue.

To fix the issue, perform clean boot and try to install the pending Windows Updates manually (by installing two updates at a time) and test the issue.

Perform a Clean Boot.

Place the computer in clean boot and check if the issue persists. You may follow the article mentioned to perform a clean boot.

A clean boot allows the Windows operating system to launch without any additional programs or services running when you turn the computer on. This allows you to determine if computer issues are caused by a program or service that starts up when you boot the machine.

Refer: http://support.microsoft.com/kb/929135

While the computer is in clean boot state, try to install the Windows Updates one by one and check if the updates are getting install without fail.

Note: After performing the troubleshooting steps, check the section “how to reset the computer to start normally after clean boot troubleshooting”.

Hope this helps. Please let us know if you need any further help.