New Question
PRTG Network Monitor

Intuitive to Use.
Easy to manage.

300.000 administrators have chosen PRTG to monitor their network. Find out how you can reduce cost, increase QoS and ease planning, as well.

Download >>


What is this?

This knowledgebase contains questions and answers about PRTG Network Monitor and network monitoring in general. You are invited to get involved by asking and answering questions!

Learn more


Top Tags

View all Tags

how to solve Not Connected (PRTG Netwrok Monitor was Stopped)?



Your Vote:



hi out PRTG stop the service. I got this error

PRTG Network Monitor x64

The server was stopped

System Emergency. The system was halted, because of the following: The available diskspace is too low! Please attend to the problem and restart the core server service thereafter.

Then i check the console it is showing the status Not Connected (PRTG Netwrok Monitor was Stopped)

I don't know how to restart the service and free a diskspace.

I hope someone can help.


disk-free prtg-network-monitor storage

Created on Nov 24, 2017 6:47:13 AM by  darvin (0) 1

2 Replies



Your Vote:



Hello Darvin,

I would recommend to move PRTG's data to a different partition/drive as mentioned here.

In case you're not where PRTG's data path is located, please open PRTG Administration Tool on the PRTG Server, on tab "Logs and Info" is a button that will open the data path.

Most data is most likely inside PRTG's data path in folder "Monitoring Database". You find there data folders for each day, if you like you can also manually delete older folders from there. Generally PRTG deletes historical sensor data according to what's configured in Setup | System Administration | Core & Probes | Historic Data Purging.

Kind regards,


Created on Nov 24, 2017 2:51:39 PM by  Erhard Mikulik [Paessler Support]



Your Vote:



Hi Erchard,

Thank you for your response.

What I did is that, I free some space from our local drive. Last time I don't know where to stop/restart the service. Thanks for the link.

Now it is running again.



Created on Nov 27, 2017 1:35:52 AM by  darvin (0) 1

Please log in or register to enter your reply.

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.