Error: DP-OS-F

This error code indicates there may be a permission issue. Try the following steps below:

1. Exit completely out of the Epic Games Launcher by right-clicking on the system tray icon in the bottom right and clicking on Exit.
2. Right-click on the Epic Games Launcher shortcut and click Properties.
3. Click on the Security tab.
4. Click on your username under Groups or user names.
5. Click on Edit.
6. Check all the Allow boxes.
7. Click Apply.
8. Click OK.
9. Try installing the game again.