Files in the latest version of Windows 11 cannot be dragged to parent folders.

In Windows 11, especially with recent updates, Microsoft changed some drag-and-drop behaviors for security and design reasons. Moving files to parent folders via drag-and-drop isn't explicitly disabled, but the behavior may be less intuitive or slightly restricted depending on the context, focus, or explorer settings. In some cases, Windows 11 may prevent certain drag-and-drop actions to avoid unintended moves, especially if the source and target are on different drives or if certain features (like Controlled Folder Access) are enabled.