The "Steam must be running to play this game" error in DmC: Devil May Cry is typically a handshake issue between the game's executable and the Steam client. Users on Reddit and Steam Community have found several reliable fixes for modern systems like Windows 10 and 11 . Top Recommended Fixes Run Steam as Administrator : Completely exit Steam first. Right-click the Steam shortcut on your desktop and select "Run as administrator"  . Once Steam is open, try launching the game from your library. Delete ClientRegistry.blob : Navigate to your main Steam installation folder (usually C:\Program Files (x86)\Steam ). Find and delete the file named ClientRegistry.blob  . Restart Steam; it will automatically update and recreate this file, often clearing the "Steam must be running" loop. Verify Integrity of Game Files : Open your Steam Library . Right-click DmC: Devil May Cry and select Properties . Go to Installed Files and click Verify integrity of game files  . Compatibility Mode : If the game still won't launch, locate the DMC-DevilMayCry.exe in the game folder. Right-click it, go to Properties > Compatibility , and check "Run this program in compatibility mode for" and select Windows 7 or Windows 8  . Advanced Troubleshooting If the basic steps fail, reviewers and users from Capcom Support and community forums suggest: Antivirus Exceptions : Add the game's folder and Steam.exe to your antivirus and firewall exclusion lists, as false positives can block the connection . Check for DLC Version Mismatches : Some players found that older retail keys or specific versions (like the 2013 build) struggle on newer systems. Ensure you have the latest version from the Steam servers, which is better optimized for modern OS environments . Disable Overlays : Turn off the Steam Overlay or third-party overlays like Discord or RivaTuner, which can sometimes interfere with the game's initial startup sequence . DMC Devil May Cry - Steam must be running to play this game

The "Steam must be running" error in DmC: Devil May Cry often results from a failure to detect the Steam client, solvable by deleting the ClientRegistry.blob file, checking for antivirus interference, or verifying game file integrity. Additional solutions include running the game in compatibility mode for Windows 7/8, launching as an administrator, and ensuring that all necessary Direct X and C++ redistributables are updated. Further troubleshooting steps are available at the Steam Community forum thread "Steam must be running" :: DmC Devil May Cry Discussões gerais

Headline: 🛠️ FIX: "Steam must be running to play DmC: Devil May Cry" – The Definitive Solution Post Body: If you’re trying to replay DmC: Devil May Cry (the 2013 reboot) and get hit with the dreaded “Steam must be running to play this game” error—even when Steam is clearly open—you’re not alone. This bug resurfaces often on Windows 10/11. After digging through old forum threads and testing multiple fixes, here is the only reliable solution that works in 2024/2025. The Fix (3-Step Process) Step 1: The Compatibility Toggle

Go to your Steam library. Right-click DmC: Devil May Cry → Manage → Browse local files . Find the game executable: Binaries → Win32 → DMC.exe Right-click DMC.exe → Properties → Compatibility tab. Check "Run this program as an administrator." Check "Disable fullscreen optimizations." Click Apply → OK .

Step 2: Kill Background Steam Processes (Critical) This forces Steam to re-authenticate the game.

Exit DmC completely. In Steam, go to Steam (top left) → Exit (not just close the window). Open Task Manager (Ctrl+Shift+Esc). Look for any remaining steam.exe or steamwebhelper.exe processes → right-click → End task . Relaunch Steam as Administrator (right-click Steam shortcut → Run as administrator).

Step 3: Launch the Game Differently

Do not launch from a desktop shortcut. Do not launch from Big Picture mode. Instead, go to your Steam Library → click Play on DmC .

If That Fails (The Nuclear Option) Some older DRM wrappers conflict with modern Steam. Delete the DRM file:

Navigate to: \steamapps\common\DmC Devil May Cry\Binaries\Win32 Find and delete the file named: steam_api.dll (Don't worry—Steam will verify and redownload a clean copy.) Back in Steam: Right-click DmC → Properties → Installed Files → Verify integrity of game files . Once verified, repeat Step 1 (compatibility settings) and launch.

Why This Works The error is caused by a timing issue. The game’s older DRM checks for Steam before Steam has fully initialized its background authentication. Running Steam as admin + forcing compatibility gives the DRM the extra milliseconds it needs to confirm your license.

TL;DR: Run both Steam and DMC.exe as Administrator. Disable fullscreen optimizations. Kill all Steam processes before relaunching. Let me know below if this solved it for you! 👇