: 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
The most common cause is Windows Defender's , which prevents unauthorized apps from writing to the "Documents" folder where Dolphin typically stores data. dolphin iosfs failed to write new fst
Click under "Virus & threat protection settings". : You can also use the Dolphin registry
Go to > Update & Security > Windows Security . Select Virus & threat protection . such as C:\DolphinData\