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

Certified website



Dear, good morning we have a website that shows the old certificate that has been expired for a long time, when I try to add the sensor again it takes the thumb print of the old one, how to solve this issue?

ssl ssl-certificate sslcertexpiration

Created on Jun 15, 2020 1:38:51 PM

1 Reply




First, from the probe that is monitoring this site, can you browse to it, and verify the browser sees the new certificate?

Benjamin Day
[Paessler Support]

Created on Jun 16, 2020 4:34:03 AM by  Benjamin Day [Paessler Support] (1,441) 2 1

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.