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

After version 15 update sensors are unknown



I upgrade from version 14 to version 15.1.13. First I install .NET4 framework But after upgrade, slowly all sensors become into "UNKNOWN" state. If I restart probe service and server it normalize but after 10 minutes, slowly all sensors become to "unknown" state again.

sensors unknown upgrade version15

Created on Jan 16, 2015 7:53:32 PM

1 Reply



Hello Luis,

Can you please forward a Support Bundle by using the "Contact Support" button in the bottom right corner of the Web GUI or Enterprise Console for further investigation?

Best regards

Created on Jan 19, 2015 12:28:27 PM by  Felix Saure [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.