Dolphin Ios-fs Failed To Write New Fst Jun 2026

According to many users on Reddit, simply renaming the user directory can resolve the conflict, particularly on older or misconfigured installations.

Add the entire Dolphin Emulator folder (the installation folder and the User folder) to your antivirus software's exclusion list. For Windows Defender, go to Settings > Privacy & Security > Virus & threat protection > Manage settings > Exclusions and add the Dolphin folders. dolphin ios-fs failed to write new fst

When Dolphin throws the "Failed to write new FST" error, the emulator is trying to update its virtual directory index (usually creating a temporary file like fst.bin.xxx and renaming it) but is met with an restriction from the host operating system. Root Causes of the Error According to many users on Reddit, simply renaming

File Selection Table. This is essentially the directory index file ( fst.bin ) that keeps track of where files are located within the emulated memory. When Dolphin throws the "Failed to write new

The dolphin ios-fs failed to write new fst error can be unsettling, but it is generally harmless. By understanding what the error means—a temporary conflict between Dolphin and another process over a small catalog file—you can confidently resolve it without worrying about data loss. Use the systematic troubleshooting steps provided, apply the most appropriate workaround for your environment, and know that the issue is actively being addressed by the Dolphin development team.

Navigate to your system's user documents folder (usually C:\Users\YourName\Documents on Windows). Locate the folder named . Rename that folder to simply Dolphin .