It’s wise to start with the safest solutions—those that involve Steam's official tools—before moving to manual fixes.
Locate the problematic game, click the three dots, and choose . Restart your PC to clear cached files. Reinstall the game from your official launcher store page. 4. Update Your Graphics Drivers and DirectX
A: No. DirectX uses its own set of DLL files. The steam_api64r.dll file is not a Windows file, a system file, or a DirectX file. Installing or repairing DirectX will not resolve this issue.