To help narrow down the exact issue, let me know you are running and if you are using the official Steam client or a different storefront launcher. Share public link
This is the number one cause, especially for less common or older games. Your antivirus software, including Windows Defender, may falsely flag the steam_api64.dll file as a threat (a "false positive") and quarantine or delete it, as it can sometimes resemble malware due to its DRM functions. steamapi64dll wolfenstein the new order updated
steamapi64.dll is a Dynamic Link Library (DLL) file developed by Valve Corporation. It is the backbone of —the set of tools that allows video games to integrate with Steam’s features. Specifically, this file manages: To help narrow down the exact issue, let
steam_api64.dll is a dynamic link library used by Steam to handle game licensing and initialization. Anti-virus software often flags modified versions of this file as "malware" (often labeled as Trojan.Generic) and quarantines it, causing the game to crash on startup. steamapi64