Windows 10: Unable to install the latest security update to Windows 10. Error Code 0x80070643.

I am unable to install the latest 2024-01 Security Update for Win 10 version 22H2 for x64 based systems. I get the error code 0x80070643. I ran the .NET Framework Repair tool. Next, I did a Clean Reboot so that other applications would not start that might interfere with installing the update. The update page says that it has downloaded. However, it still fails to install. I also did the Update Troubleshooter, which found no problems. A log was sent.What else can I do?

:)

 

Unable install update in windows 10 Error 0x80070643

Hi David,

Thank you for your interest in Windows 10.

Please provide us certain information to narrow down the issue:

• What is the make and model of your computer?
• Which security program is installed on your computer?

I would suggest you to follow the steps from the article below and check if it helps.

.NET Framework update installation error: "0x80070643" or "0x643"


Troubleshoot problems updating Windows - Microsoft Support

Note: The troubleshooting steps in the above links are meant for windows 8, however, you can use the same for windows 10 as well.

Hope the information helps. Feel free to reply to us for further assistance and we’ll be more than happy to help.

 

Win 10 update failed to install error 0x80070643

Hi,

The error code 0x80070643 is commonly caused by .Net Framework installed on the computer. We suggest addressing the 0x80070002 error code first because this issue occurs when some files in the Windows Update are missing. We can solve this error code by following
the troubleshooting steps suggested on this article.

Note: The troubleshooting steps for Windows 8.1 also applies to Windows 10.

Update us with the outcome so we can provide further assistance.

 

Windows Update multiple Install errors/Failure (error 0x80070643)


Hi All,

I'm wondering if anyone can help.

I have upgraded to windows 10 for a few weeks now and over the last couple of days it has stopped installing any windows updates, the error code that pops up is (error 0x80070643)

It's also stopping me from installing some other programs but not all.

I have tried restarting the computer, Nothing
I've tried restarting wuauserv service, Nothing
I've tried the troubleshooter for windows update, it says problems were found and they were fixed.
I have also cleared the cache for update downloads from the following folder:
C:\Windows\SoftwareDistribution\Download

In the Windows update page it seems to take forever to install the updates and then throws out the following:
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:
Security Update for Microsoft ASP.NET MVC 4.0 (KB2993928) - Error 0x80070643
Security Update for Microsoft Silverlight (KB3080333) - Error 0x80070643
Security Update for SQL Server 2008 R2 Service Pack 2 (KB3045313) - Error 0x80070643
Update for Microsoft Visual Studio 2010 Tools for Office Runtime (KB3001652) - Error 0x80070643

Note: this is after clearing the cache in the above folder location.

If anyone can help that will be great as it seems to be affecting installation of other programs.