Fix Update Failed to Install Error 0x80070643
This issue occurs because a previous installation left the computer in a restart pending state.
Error code – 0x80070643 (-2147023293) is a generic MSI error code. I was able to fix some computers manually by simply pausing the app question and running the update again.
Give yourself all permissions.
Search for malicious viruses.
Perform a clean boot.
Run the Windows Troubleshooter.
SFC Permissions (System File Checker).
Reset with SubInACL.
Update Windows 10 manually.
Error 0x80070643 is a Windows update error. It may appear on your computers for various reasons. Although this bug does not pose a malicious threat to your system, it is recommended that you fix it to ensure that your system is working properly and that there are no installation problems.