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

(Sensor not licensed)



Dear Sir,

I'm using PRTG network monitor V12.2.1.1767 software, this was working fine since 3 days, but suddenly some sensor light is blue and give information to sensor not licensed. but some sensor is working fine. what can i do this. it is not pause at my end. kindly provide any solution.


email graph maps

Created on Nov 19, 2012 6:03:57 AM

2 Replies



Please open a support ticket or send a mail to [email protected] refering to this thread. Please include a screenshot of the "Setup -> PRTG Status -> System status" page for analysis.

Created on Nov 19, 2012 10:21:22 AM by  Patrick Hutter [Paessler Support] (7,225) 3 3



Dear Sir,

i get the backup from PRTG Software, after that i will new installation on our server, but my PRTG is not working fine......

Created on Nov 21, 2012 6:26:41 AM

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.