Open it and type the number 220440 (this is the AppID for DmC). and exit. 4. Reinstall Steamworks Common Redistributables DmC relies on background Steam tools to function.
At its core, the DmC: Devil May Cry "Steam must be running" error is a DRM (Digital Rights Management) issue. The game's executable file needs to confirm that it was launched through a legitimate, active Steam session. When this verification fails, it triggers the error. This can happen for several common reasons:
| Order of Probability | Fix | Why It Often Works | | :--- | :--- | :--- | | | Run Steam as Administrator | The most common cause is a simple administrative permission block, not a deep technical failure. | | 2 | Check Antivirus / Firewall | A leading cause of the error is security software mistakenly blocking the connection. | | 3 | Log Out / Back Into Steam | A basic but highly effective method for refreshing your account's authentication with the game. | | 4 | Verify Game File Integrity | If a game file is corrupted (perhaps from a mod or faulty update), Steam will repair it automatically. | | 5 | Cap FPS to 60 | This is the primary fix for performance issues, and it can resolve some launch-related engine errors. |
Type the following exact line into the box (adjust the drive letter if Steam is installed elsewhere): "C:\Program Files (x86)\Steam\bin\SteamService.exe" /repair Open it and type the number 220440 (this
It sounds like you're dealing with the error in DmC: Devil May Cry (or possibly the classic Devil May Cry 3/4 on Steam).
Open the Steam client, go to your Library , find DmC: Devil May Cry , and click the green PLAY button. 3. Verify Integrity of Game Files
Sometimes, a minor update or an unexpected crash can corrupt essential files. Steam has a built-in tool to detect and fix these automatically. Steam Library Right-click on DmC: Devil May Cry and select Properties Installed Files (or Local Files) tab. When this verification fails, it triggers the error
If none of these work, try reinstalling Steam (keep steamapps folder) or check if your antivirus is blocking Steam’s DLL injection for that game.
In the tab, check "Run this program in compatibility mode for" and select Windows 7 or Windows 8 .
Does this error happen with on your system? If none of those work
If you’re trying to replay DmC: Devil May Cry (the 2013 reboot) and get hit with the dreaded error—even when Steam is clearly open—you’re not alone. This bug resurfaces often on Windows 10/11.
If this sounds too technical, a simpler "nuclear" option is to uninstall the game, then manually delete the game's folder (e.g., ...\steamapps\common\DmC Devil May Cry ) to ensure all old files are gone, then reinstall the game from Steam.
Usually, no. A full reinstall of Steam is a last resort. First, try running it as an administrator, adding it to your antivirus exclusions, and verifying the game files. If none of those work, a clean reinstall of Steam is an option.