What is this?

This knowledgebase contains questions and answers about PRTG Network Monitor and network monitoring in general.

Learn more

PRTG Network Monitor

Intuitive to Use. Easy to manage.
More than 500,000 users rely on Paessler PRTG every day. Find out how you can reduce cost, increase QoS and ease planning, as well.

Free Download

Top Tags

View all Tags

How to setp alerts on sensers with an Unknown Status?



I'm new to PRTG and was tasked with finding out if we can turn on alerting for sensors in an Unknown state. Whenever our server fails sensors go into an unknown state but don't alert. If the server fails at night no one will know until someone gets in the next day. Obviously, we would like to be alerted when this happens. How would I go about setting this up to alert when sensors go into an unknown state?

alert alert-setup alerting alerts sensor sensors unknown unknown-state unknown-status

Created on Apr 11, 2020 11:42:01 AM

1 Reply




This can be done with a state trigger which you can setup in the Notification Trigger tab of every sensor, where you want to create the trigger.

You can find more information about the State Triggerhere.

Created on Apr 13, 2020 7:35:04 AM by  Marijan Horsky [Paessler Support]

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.