Cannot Open Remote Console in ILO 2 HP Proliant

When try to open Remote Console ILO 2 (Integrated Lights Out 2) HP Proliant Server, it says : The remote console is unavailable, it is already in use by a different client. How to Solve this problem ?

• Go to ILO 2 Main Menu
• Choose System Status Tab
• Click Diagnostics
• Click Reset

The ILO will reset,
• Close the browser, open again and Log-in. the problem must be solved.