> > I was asking about the IBServer mutex where guardian is not used???
>
> Didn't you read the code excerpt I posted? If the guardian doesn't tell the
> engine to take the mutex, the engine doesn't take that mutex. So simple.
> It's used by the guardian to detect when the engine dies. So, if the
> guardian is not running, that mutex doesn't have sense.
>
> The rest of the mutexes are internal to the engine and are used for
> protecting sensitive portion of code. Nothing to do with the above mutex.

Sort of understand now. So if I am not using guardian and server is
running and I try to install IB again, is there a mutex to detect the
server only?