Windows 10: Error 0x80070643

Hi,
I just cleaned the whole computer and installed the Windows 10 Home
The problem i have is:
I try to update the Microsoft Defender Antivirus - KB2267602 versio 1.335.459.0 from Windows Update
Every time it says "Download error - 0x80070643"

i tryed to restart the computer - didnt succeed
i got everything else downloaded correctly but not the MDA
Any ideas how to fix this?

:)

 

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

 

• Update for Windows 10 for x64-based Systems (KB3081704) - Error 0x80070643

Hi Richard,

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"

Fix Windows Update errors

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

Windows Essentials

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

 

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"


Fix Windows Update errors



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.