Wait for the process to finish; Steam will automatically redownload any missing data. 4. Compatibility Mode (for Windows 10/11)
, try these troubleshooting steps ranging from quick fixes to advanced file repairs: Core Troubleshooting Run as Administrator : Right-click the icon and select Run as Administrator Wait for the process to finish; Steam will
Here are some additional tips and solutions to help you resolve the "Steam must be running to play this game" error: Wait for the process to finish
– Right-click Steam → Properties → Compatibility → “Run this program as an administrator.” Do the same for DMC.exe in the game folder. more commonly for this error
Look for a file named or steam_api64.dll tied to the DmC folder.
Look for a file named steam_api.dll or, more commonly for this error, steam_appid.txt .