I have three web servers with several app pools that are being monitored through PRTG. I keep getting the following error: Unable to connect to the specified computer, or the computer is offline. (Performance Counter error 0x800007D0)

Please take a look at our extensive WMI Troubleshooting Guide: https://kb.paessler.com/en/topic/1043-my-wmi-sensors-don-t-work-what-can-i-do

If the WMI App Pool Sensors do not work reliably, you can also try the workaround, as explained here.


Disclaimer:
The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.