Add your Steam folder as an "Exclusion" in your antivirus settings so it doesn't happen again. 3. Reinstall Steam (The Nuclear Option)
Steam can automatically detect and replace the missing file. Right-click Dishonored in your Steam Library. Properties Installed Files Verify integrity of game files Run as Administrator: Exit Steam completely, then right-click the shortcut and select Run as administrator before launching the game. SEGA Support 📁 Technical Details Developer: Valve Corporation. dishonored steamapidll is missing