If the game worked recently and suddenly broke after an update, check your security program's vault. Open or your third-party antivirus app. Navigate to Protection History or Quarantine . Search for steam-apirajas.dll . Select the file and click Restore or Allow on Device .
Some users download the missing file from sites like DLLme or DLL-files.com , though this carries a security risk as these files are not official. Safety Warning steam-apirajas.dll age of empires 2