If you’re still stuck, try reinstalling Steam (without deleting your games) or disabling third-party overlays (Discord, GeForce Experience).
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Open (or your third-party antivirus program). If you’re still stuck, try reinstalling Steam (without
A: While this error is more common with unauthorized copies (cracks), it can and does happen with legitimate Steam purchases. If you bought the game on Steam, don't panic—it's almost always a technical issue that can be fixed.
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Right-click your desktop shortcut (or navigate to your root Steam installation folder) and choose Properties . Head over to the Compatibility tab. Check the box next to Run this program as an administrator . Click Apply , then hit OK to save the changes.
: Click on Steam in the top-left corner of the client and choose Settings . Clear Cache : Navigate to Downloads and click Clear Cache . Open (or your third-party antivirus program)
The "Steam must be running" error for DmC: Devil May Cry is a war of attrition between old DRM and new operating systems. By applying these fixes—specifically the DEP exception, the antivirus whitelist, and the manual DLL recovery—you are not just fixing an error; you are systemically rebuilding the bridge between the game and the Steam client.
To fix the "Steam must be running to play this game" error for DmC: Devil May Cry
# Run as Administrator net stop SteamService taskkill /F /IM steam.exe taskkill /F /IM steamwebhelper.exe net start SteamService