If the DLL belongs to a specific game and none of the above work, perform a clean reinstall.
If you are seeing this error for a specific game, could you tell me: What is the ? Are you using any mods or third-party launchers ?
: Malicious software may target or replace system-level DLLs. How to Fix the Error Safely
If you’re running into a "steam-apirajas.dll missing" error while trying to launch a game, it usually means the file was either deleted, corrupted, or flagged as a "false positive" by your antivirus.
The correct sequence of actions is: