Dolphin Iosfs Failed To Write New Fst ^hot^ May 2026

If this fixes the issue, right-click the file again, go to > Compatibility , and check Run this program as an administrator to make the fix permanent. 3. Change the User Directory Location

: You can also use the Dolphin registry key to point the UserConfigPath to a new location, such as C:\DolphinData\ , though this is more advanced. 4. Check Antivirus Exclusions

Scroll to and click Manage Controlled folder access . dolphin iosfs failed to write new fst

To resolve the error in the Dolphin emulator, you typically need to address file write permissions or antivirus interference . This error occurs when Dolphin is blocked from updating the virtual Wii NAND metadata (FST files), which it uses to track saved data and content. Why This Error Happens

Third-party antivirus programs (like Avast or Bitdefender) may block Dolphin's constant read/write cycles. Failed to rename temporary FST file" errors after update If this fixes the issue, right-click the file

Go to > Update & Security > Windows Security . Select Virus & threat protection .

: Create a new, empty text file named portable.txt in the same folder as your Dolphin.exe . This forces Dolphin to store all settings and saves in that local folder instead of "Documents." This error occurs when Dolphin is blocked from

If your "Documents" folder is restricted or synced with OneDrive, moving the data can stop the error.

Either turn it or click Allow an app through Controlled folder access and add Dolphin.exe to the list. 2. Run as Administrator

The most common cause is Windows Defender's , which prevents unauthorized apps from writing to the "Documents" folder where Dolphin typically stores data.