Windows 10 · Windows
Troubleshoot the 'Steam Must Be Running' Error
Source-checked About 10 minutes
Answer
Restart the Steam client and sign in again, launch the game from its Steam Library entry, then verify the game files if Steam still reports that it must be running. Do not bypass Steam or alter game files to suppress the message.
Prepare the correct account, device, or project
Confirm the correct Steam account, game, library drive, launcher state, ownership provider, and newest local or cloud save before repairing files or adding shortcuts. Back up irreplaceable saves when the game documents their location. A Non-Steam entry is only a shortcut and never transfers ownership, achievements, updates, anti-cheat support, or account services to Steam.
Restart and sign in to Steam
Exit Steam completely, reopen it, and confirm the correct account is signed in.
Launch from the Steam Library
Start the affected game from its Steam Library page rather than a stale desktop shortcut.
Verify the game files
If the error remains, use the Steam support flow to verify the game files before reinstalling or changing game files.
Verify the result
Launch from the Steam Library and verify Steam overlay or account context where supported, then restart the game once from the same entry.
Use the supported recovery boundary
If the expected result is unavailable or the interface differs, stop before deleting additional data, weakening security, or using a third-party workaround. Recheck the exact account, device, permissions, compatibility, and current product state, then compare the result with the linked Steam Support guidance. Preserve the original files and exact error so official support can diagnose this specific task without guessing.
Video walkthrough
If it does not work
- If the message remains after verification, preserve the exact launch path and error and check game-specific Steam Support. Do not replace executables or bypass Steam ownership checks.
Sources and verification
Checked against official documentation on . Scope: Windows.
Follow the linked first-party guidance if labels differ after a platform or app update.