When i am start FF TMG 2010 Management Console error message appear "The Parameter is incorrect 0x80070057, also i am trying to install FF TMG 2010 SP2 during installation setup error "Setup failed while registering Forefront TMG managed performance monitoring"
Can i help please................
Would you please output the installation log? Is there any error code in the log? And what is your network environment? Is this an array member orarray manager server?