Windows 11 and 10 users have reported a mysterious ‘inetpub’ folder after installing Microsoft’s April 2025 updates.The folder is typically associated with the Internet Information Services (IIS) web server, but it now appears on systems without it installed.Microsoft has confirmed that the behavior is intentional but has not fully explained why.Although the folder is empty and does not interfere with system stability or performance, Microsoft advises not to delete it.