Process %1 (PID=%2). The site monitor API could not start - Call=%3 Error code=%4. Try to resolve this event by restarting ...

Process %1 (PID=%2). The site monitor API could not start - Call=%3 Error code=%4. Try to resolve this event by restarting the computer that is running Exchange. If this event reoccurs, review the Application log and System log for any corresponding Warning or Error events.