While trying to install Microsoft .Net Framework 4.7.2 in Windows Update, you may encounter a fatal error 643 (0x80070643) where the update fails and a server reboot results in the
Tag: 0x80070643
Microsoft has released an online troubleshooting tool to help you resolve your Windows Update errors if you’re running Windows 10, Windows 8.1, or Windows 7. If you’re running Windows 8,