Press and wait for a command terminal to flash and close. Reopen Steam. Does this error happen with other Steam games , or just DmC ? Are you using any mods or custom launchers? I can provide targeted steps based on your specific setup! Share public link
: Windows blocks the game from seeing Steam because one program is running with administrator permissions while the other is not.
Players have shared various workarounds and solutions on online forums: Dmc Devil May Cry Steam Must Be Running To Play This
It’s the mildest form of DRM. Unlike always-online DRM, it doesn’t hinder gameplay once set up. However, if you buy a key from a third-party site that says “Steam must be running,” they’re just reminding you that it’s not a DRM-free copy (like GOG). For most Steam users, this is standard and unnoticeable.
This error typically triggers when the game's DRM cannot establish a connection with the Steam client. This can be caused by the game launching before Steam is fully initialized or by third-party software (like firewalls or overlays) interfering with the process. Press and wait for a command terminal to flash and close
You might have downloaded a "No-DVD" or "cracked" executable years ago to bypass the disc check. If you then copy that older, cracked .exe into a modern Steam-installed folder, the crack (designed to emulate Steam) conflicts with the actual running Steam client, causing this error.
: Steam may have failed to download an essential .dll file required for authentication. Are you using any mods or custom launchers
Sometimes, DmC tries to communicate with Steam, but lacks the necessary Windows permissions to do so.
Open your Steam installation directory, locate DMC-DevilMayCry.exe , and repeat these steps to give it administrative privileges as well. Step 2: Verify Integrity of Game Files
If you have tried all ten fixes and still see "Steam must be running to play this," the issue may be hardware or OS-level virtualization. In rare cases, certain gaming laptops with (with P-cores and E-cores) cause timing issues with legacy DRM. The fix there is to force DmC to run on Performance cores only via Process Lasso .