Simulator repair

iRacing

iRacing is already running / simulator failed to close

An iRacing process that remains after leaving a session can cause an already-running message. Check for a genuinely stale process and the applicable Logitech integrations.

Approval requiredActiveEvidence reviewed 2026-09-01Guide updated 2026-09-29

Checks and expected results

Before you repair it

  • Confirm the session has ended and inspect Task Manager for the remaining simulator process.
  • Record the wheel model and whether TrueForce or Logitech lighting integration is in use.
  • Close the simulator and back up app.ini before the supported integration-disable test.

How to confirm the result

Start and exit a test session, then confirm the simulator process closes and the next launch succeeds. Compare wheel features with the previous settings.

Repair limits and when to stop

Disabling TrueForce and lighting changes those features during the test. It is not a reason to interrupt a running race, and it does not prove that every leftover process is a Logitech fault.

How PitMedic recognizes it

iRacing reports the simulator is already running or a stale simulator process remains after exit.

Signals PitMedic may recognize

  • iRacing is already running
  • sim is already running
  • trueForceEnabled
  • enableLogitechLED
  • Please close the simulator

Built-in response

Back up app.ini and disable both TrueForce and Logitech hardware-lighting integrations, matching iRacing's documented workarounds for simulator shutdown/stale-process conflicts.

Repair safetyReversible / ask first because a stale simulator process may be closed

Verification sources

PitMedic prioritizes vendor documentation and labels community findings separately.

  • iRacing is already running messageiRacing Support · Official source

    Official support documents a Logitech G HUB TrueForce conflict and the trueForceEnabled=0 workaround.

    Open source
  • Please close the simulator if you wish to launch a new sessioniRacing Support · Official source

    Official support also documents Logitech hardware lighting as a shutdown conflict and recommends enableLogitechLED=0.

    Open source