However, some users reportWindows 10 KB5001716 failed to install with 0x80070643.
Well, there are several possible reasons why you are getting Windows 10 Update download errors.
As a workaround,uninstall the old KB5001716and check for updates again help fix the error.
Here is a dedicated video on how to fix Windows 10 update error 0x80070643.
This is a builtin tool designed to automatically diagnose and resolve issues related to Windows updates.
Running the troubleshooter is a quick and easy way to identify and resolve common update-related issues.
Start Windows Installer service
This error can sometimes be solved by manually starting the Windows Installer service.
Deleting Windows update cache files is another solution that may just work for you.
This can help ensure the stability and integrity of the Windows operating system.
This will scan your system for all its important system files, and replace them where necessary.
Wait until Windows scans and repairs system files.
