Go to your Steam installation folder (Usually C:\Program Files (x86)\Steam ). Right-click steam.exe and select . Open the Compatibility tab.
DmC cannot launch Steam as an admin.
This guide will walk you through seven proven solutions to kill this error for good, ranked from the simplest (5-second fixes) to the most technical (Proton trickery).
DmC: Devil May Cry uses an older version of Steam’s DRM wrapper. When you press "Play," Steam tells the game, "Hey, it’s cool, let them play." However, due to modern operating system security, compatibility layers (Proton/WINE), or corrupted local files, the game’s executable loses track of the parent Steam process. The game looks for steam.exe or steamwebhelper.exe , doesn't see it, and throws the error.
A very uncommon but documented cause for this error is the lack of a C: drive on your system. Some games and applications are hard-coded to look for specific system paths that rely on a C: drive. If you have a different partition or drive letter assigned as your primary system drive, it can cause this error.
If this works, you may need to set Steam to always run as admin permanently:
Missing or corrupted game files—specifically the steam_api.dll —can cause this error.
Find your Steam shortcut on the desktop or in the Start menu, right-click it, and select "Run as administrator" .
Open the Windows Start Menu, type , and press Enter. Select Virus & threat protection .
Go to your Steam installation folder (Usually C:\Program Files (x86)\Steam ). Right-click steam.exe and select . Open the Compatibility tab.
DmC cannot launch Steam as an admin.
This guide will walk you through seven proven solutions to kill this error for good, ranked from the simplest (5-second fixes) to the most technical (Proton trickery). Go to your Steam installation folder (Usually C:\Program
DmC: Devil May Cry uses an older version of Steam’s DRM wrapper. When you press "Play," Steam tells the game, "Hey, it’s cool, let them play." However, due to modern operating system security, compatibility layers (Proton/WINE), or corrupted local files, the game’s executable loses track of the parent Steam process. The game looks for steam.exe or steamwebhelper.exe , doesn't see it, and throws the error.
A very uncommon but documented cause for this error is the lack of a C: drive on your system. Some games and applications are hard-coded to look for specific system paths that rely on a C: drive. If you have a different partition or drive letter assigned as your primary system drive, it can cause this error. DmC cannot launch Steam as an admin
If this works, you may need to set Steam to always run as admin permanently:
Missing or corrupted game files—specifically the steam_api.dll —can cause this error. When you press "Play," Steam tells the game,
Find your Steam shortcut on the desktop or in the Start menu, right-click it, and select "Run as administrator" .
Open the Windows Start Menu, type , and press Enter. Select Virus & threat protection .