Windows 10 Appdata Folder. The Appdata folder and LocalLow folder should remain in your Windows system directory. The AppData folder stores the files of registered Windows users who have the option to unhide the AppData folder to remove unnecessary files, for Many programs save their application data in the AppData folder.
If issue persists, do get back to us. Hope this helps in resolving the issue. The AppData folder resides in your user folder—the same location that contains Documents, Music, and other library folders (unless you've moved them elsewhere).
If the folder is missing, but you never removed it before, then it's easy to unhide it and find your application files without making a fuss.
The AppData folder stores the files of registered Windows users who have the option to unhide the AppData folder to remove unnecessary files, for Many programs save their application data in the AppData folder.
But not all of them may actually be necessary and up to date. In order to view the folder you need to unhide system files and folders first. The Appdata folder and LocalLow folder should remain in your Windows system directory.