Ensure The Binding of Isaac: Repentance is not running. Also close Steam completely (right-click the system tray icon → Exit). This prevents file-locking.
There are several reasons why you might want to install a 100% save file for Binding of Isaac Repentance: binding of isaac repentance 100 save file install
If you have an existing save you want to keep, install the 100% file into a slot you are not currently using (e.g., if you play on Slot 1, replace save2.dat ). Ensure The Binding of Isaac: Repentance is not running
Unlocking 100% in Repentance requires: