The “Steam must be running” error in DmC: Devil May Cry is rarely a true Steam absence, but a local communication or permission failure. The fix hierarchy—restarting Steam service, verifying files, clearing cache, and adjusting compatibility—resolves >95% of cases. Only in extreme corruption scenarios does a full Steam client reinstall become necessary. System administrators and power users should prioritize checking steam_api.dll integrity and antivirus exclusions before escalating to reinstallation.
Refreshing locally cached configuration data can fix "Steam must be running" bugs. Go to > Settings > Downloads . Click Clear Download Cache . Steam will restart, and you will need to log back in. 4. Compatibility Mode for Newer Systems The “Steam must be running” error in DmC:
Giving both Steam and the game executable higher permissions often resolves communication issues between them. Click Clear Download Cache
Antivirus software (especially Windows Defender or Norton) often flags modified game executables (common with mods) as a threat and blocks communication with Steam. and adjusting compatibility—resolves >
April 12, 2026 Affected Software: DmC: Devil May Cry (2013) – Steam edition Affected OS: Windows 10/11 (also legacy Windows 7/8)
Before trying advanced steps, perform these basic troubleshooting actions:
To fix the "Steam must be running to play this game" DmC: Devil May Cry try deleting the ClientRegistry.blob file from your main Steam installation folder