A report regarding the error in GRID Autosport typically identifies the issue as a missing or quarantined dynamic link library file required for the game to communicate with the Steam Client API. Issue Summary
"The program can't start because steam_api.dll is missing from your computer." Steam-api.dll Grid Autosport
– Some players replace the original DLL with a custom one to enable: A report regarding the error in GRID Autosport
Steam updates, power outages during a game update, or a failing hard drive can leave the DLL partially written or corrupted. power outages during a game update
: Security software often flags DLLs as "False Positives" and deletes them.