If you own the game on Steam, use the built-in repair tool to download a fresh, official copy: Steam Library Right-click on Age of Empires II HD Properties Installed Files

The error regarding is a common issue specifically tied to Age of Empires II HD: The Rise of the Rajas

If verifying individual games doesn't work, your core Steam installation might be damaged. Go to to uninstall Steam.

When in doubt, remember: a missing DLL error is best solved by reinstalling the software that requires it, not by downloading random DLLs from the internet. Stay safe, and keep your gaming PC clean.

: Users typically encounter this file through "The code execution cannot proceed because steam_apirajas.dll was not found" error messages. This usually happens because an antivirus program has quarantined or deleted the file, recognizing it as a potential threat.