we have one IIS Server with an application pool. This pool contains some websites, an application for warehouse management. Every site is the same application, the only difference is the screen size and layout for different devices, i.e. scanner, PC, Touch Panel. Every site has a own URL. These sites are monitored with the PRTG sensor "Leistungsindikator IIS-Anwendungspool".
Every day we got 1-2 times an alarm from PRTG, the sites are not available, one site after the other, with 1 minute between the alarm message for every site. The message for all sites is the same:
"Unable to connect to the specified computer, or the computer is offline. (Leistungsindikator-Fehler # 0x800007D0)"
The trigger is definied for E-Mail and push information if the sensor is 600 seconds in error state.
All sites are fully available during the error condition. I have checked this several times from different clients and also from PRTG server, only PRTG thinks they are not.
Is there a known problem with this sensor?