Windows 10: Can't run Windows Update - 0x80070643

Every time I try to run Windows Update, it pops up the error message:"Error Encountered" and tells me to search on 0x80070643. "I've tried numerous fixes I found on the Internet, including extending the WinRE partition, starting/stopping multiple services, scannow, and a DSIM command to repair Windows. Dozens of people are complaining about this on Reddit for a few months now, so it is widespread. Edition Windows 10 ProVersion 22H2Installed on ‎11/‎25/‎2022OS build 19045.4123Experience Windows Feature Experience Pack 1000.19054.1000.0When can we expect a fix for this without having to do multi

:)

 

This update will not run - Definition Update for Windows Defender - KB2267602 (Definition 1.205.298.0) - Error 0x80070643

Hi Christopher,

Thank you for your interest in Windows 10.

I can understand how frustrating it can be when things don’t work as expected. I'd be glad to assist you with this issue.

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

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

https://support.microsoft.com/kb/976982

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

For reference: Installation error 0x80070643 or 0x800706d9

http://windows.microsoft.com/en-US/...0070643-or-0x800706d9-enable-windows-firewall

Hope this helps. Post back with result so that we can assist you further.

Thank You.

 

Error 0x80070643 can't update Microsoft apps

Hi,



Thank you for posting your query in Microsoft Community.



Windows Update error 80070643 can happen for several reasons. The most common cause is a problem with the .NET Framework installed on the computer. I would also suggest you to follow the steps from the article below and check if it helps.

Method 1: .NET Framework update installation error: "0x80070643" or "0x643"


Troubleshoot problems updating Windows - Microsoft Support



Method 2: I would suggest you to run Windows update troubleshooter and check if issue persist. I would suggest you to check for the update history to look for any pending updates.

You can follow the steps:

• 
  Type Troubleshooting in the search box present in the Taskbar.
  
• 
  Select Troubleshooting.
  
• 
  Select View all on the top left corner.
  
• 
  Run Windows update Troubleshooter.
  

Hope the information is helpful. Keep us posted on the status for further assistance.

 

error 0x80070643 (update)

Hey

Try to apply the update manually As suggested by Microsoft. I just wrote a
step by step guide.

However be sure that the update itself is downloaded and that the installation part is failing, and not the downloading part.

Hope it helps you