the file, right-click it again, and check Read-only so Fortnite doesn't reset your settings. Best Stretched Resolutions for 2026
Search (Ctrl+F) for the following lines and change the values to your desired resolution: ResolutionSizeX ResolutionSizeY LastUserConfirmedResolutionSizeX LastUserConfirmedResolutionSizeY Fortnite Stretched Resolution: Best GameUserSet...
Right-click and select Properties . Ensure "Read-only" is unchecked , then open the file with Notepad. the file, right-click it again, and check Read-only