dont know for what reason, my Password Manager sites (PMAdmin, PMUser, PMHelpdesk) cannot be accessible with error 503. The error message that retrieved from event log stated:
Commonservicefault.Gettroubleshooting mode: oadding is invalid & cannot be removed.
The communication object, system.servicemodel.channels.servicechannel, cannot be used for communication because it is in the faulted state.
Anyone can urgently assist, greatly appreciated. thks