If no solution works, a complete reinstall on a different drive may resolve hidden permission or sector issues.
Or, alternatively:
This is the most reliable fix. Steam will scan your installation folder, identify the missing .dll , and download a fresh copy automatically. Open your . Right-click on Dishonored . Select Properties > Installed Files . Click Verify integrity of game files . Wait for the process to finish and relaunch the game. 2. Check Your Antivirus Quarantine dishonored steam-api.dll is missing
for a threat and "quarantine" it, effectively deleting it from the game folder. If no solution works, a complete reinstall on
Sometimes Windows system components are broken, preventing DLLs from registering. If no solution works
: Some malware specifically targets or overwrites system DLLs. How to Fix "Dishonored steam-api.dll is Missing"