https://www.bleepingcomputer.com/news/security/microsoft-windows-inetpub-folder-created-by-security-fix-dont-delete/

Microsoft has now confirmed that an April 2025 Windows security update is creating a new empty "inetpub" folder and warned users not to delete it.

This folder is typically used by Microsoft's Internet Information Services (IIS), a web server platform that can be enabled via the Windows Features dialog to host websites and web apps.