The first thing you can try to fix Windows Update Error 66A or 13EC for .NET Framework is to perform Windows Update troubleshooting. It will find and troubleshoot ...

This option is available for NET Core 3.1, .NET 5.0, and .NET 6.0 and will be rolled out through the Automatic updates channel and Windows Server Update Services (WSUS), and Microsoft Update Catalog.

Microsoft says Windows admins can now opt into automatic updates for .NET Framework and .NET Core via Microsoft Update (MU) on Windows Server systems. The new option has started rolling out today, and ...