You may have general access to a folder but still be unable to rename a specific file. This usually means the file is locked, either because it's currently in use by another program or a background process (like indexing or backup), or you lack the specific "Change" or "Modify" permission needed to alter the filename itself. Think of it like having a library card allowing you to read any book, but not being able to change the title on the spine while someone else has it checked out or the librarian has it marked for cataloging.

For instance, you'll encounter this if you try renaming a PDF file actively open in Adobe Reader on your computer, or a video file that is currently playing in VLC Media Player. Database files used by software like QuickBooks or system files managed by the operating system (like temporary files or program components) are also commonly locked from renaming while in active use.

The main advantage is preventing data corruption or application errors from trying to access a file that suddenly changed its identity during critical operations. The limitation is user frustration when the lock isn't obvious. Always ensure the file isn't open elsewhere, restart your computer to clear potential background locks, and verify that your permissions explicitly include the "Modify" right for that file or its parent folder.