The "Steam must be running to play this game" error in DmC: Devil May Cry

file is a frequent cause of this specific error in older Steam titles. Exit Steam entirely. Navigate to your Steam installation folder (usually C:\Program Files (x86)\Steam Locate and delete the file named ClientRegistry.blob

Double-click steam.exe . It will force-download a fresh copy of the client files. Share public link

Complete Guide to Fixing the "Steam Must Be Running to Play This Game" Error in DmC: Devil May Cry

For advanced users, you can try to downgrade the game. A recent Steam update for DmC: Devil May Cry can cause compatibility problems. A community-created tool, the "Steam DmC Semi-auto Downgrade Tool" (available on Nexus Mods), allows you to revert the game to a previous, more stable version.

3. Whitelist DmC in Windows Defender or Third-Party Antivirus