Steam will scan your folder, realize the steamapi64.dll is missing, and automatically download a fresh copy. Troubleshooting Antivirus Interference
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If you own the game legally, Steam can replace the missing file automatically. Open your . Right-click WWE 2K15 and select Properties . Click the Installed Files tab. Click Verify integrity of game files . Wait for Steam to redownload the missing file. 2. Check Antivirus Quarantine steamapi64dll missing wwe 2k15 link