Currently, most of the people are facing Windows Defender error code 0x800704ec error when they are trying to update Windows defender or while opening Windows defender.
The Windows update error 80072efe is a general error that you can encounter while using any of the Windows operating systems. However, it is very specific since it relates directly to Windows Update Service.
Normally Windows Update Error 0x8000ffff arises when users change their operating systems from windows 8.1 to windows 10, it generally happens during the windows update process.