indicates the game’s launcher or executable expects the Steamworks runtime file but can’t find or load it. This can occur with a missing/corrupted file, antivirus removal, incorrect installation path, or mismatched runtime (32-bit vs 64-bit).
| Issue | Probable Cause | Quick Fix | | :--- | :--- | :--- | | Error appears every launch | Antivirus quarantine | Restore file + whitelist folder | | Error after Windows update | Corrupted permissions | Run as Admin + SFC scan | | Error appears mid-game | Overlay conflict | Disable Discord/GeForce overlay | | Error appears after modding | Broken mod file | Verify game files (Method 1) | dishonored steamapidll is missing
：有玩家在 Steam 社区论坛反馈，由于 Steam 验证时发现缺失关键数据，下载了多达 51 个丢失文件，总数据量高达 1.1 GB 。如果 Steam 验证进度条卡住或提示磁盘写入错误，可尝试重启电脑并 以管理员身份运行 Steam 后再次验证。 indicates the game’s launcher or executable expects the