Following the June 2026 update, custom folder icons and localized folder names in Windows are no longer displaying as they typically would due to intentional modifications related to security updates, specifically KB5094126 for Windows 11 versions 24H2 and 25H2. This update tightens the handling of the desktop.ini file, which is used for folder customization. Although access to the actual files remains unchanged, affected folders may revert to default icons or display original directory names instead of customized labels. Microsoft has identified certain sources as untrusted, including files downloaded from the internet and specific remote sources, which affects how desktop.ini files are processed. Users are encouraged to verify file origins, and administrators should ensure that internal sources are classified as trusted to avoid disruptions in folder presentation. The update also includes other security fixes and enhancements.