Repair an Installation

This message should never show up for healthy installations of PRTG. Somehow the installation of PRTG has been mixed up.

You cannot install a remote probe on a system on which a PRTG core server is already installed. Likewise, you cannot install a PRTG core server on a system running a remote probe.

The preferred solution is to uninstall the installed PRTG product, delete the {program files}\PRTG Network Monitor folder and delete the PRTG Network Monitor registry key.

If this is not an option you can also try the following not officially supported method:

You Want to Install a PRTG Core Server

The locally installed probe must be set to "Act As Local Probe". To install a PRTG core server on a system you have already installed a remote probe on, please

• Open the PRTG Probe Administrator application from the Windows start menu.
• In the Probe Settings tab, change the setting for Connection to PRTG Core Server to Act as Local Probe.
• Save your settings and confirm restart of PRTG services.

You can now proceed with the installation of PRTG core server on this machine.

You Want to Install a Remote Probe

The "PRTG Core Server" service must not be installed on a system where you want to install a remote probe. To uninstall the core server service, please open a command line window and move to the folder where PRTG is installed:

• On 64 bit systems: cd "%ProgramFiles(x86)%\PRTG Network Monitor"

• On 32 bit systems: cd "%ProgramFiles%\PRTG Network Monitor"

Now enter the following command:

"PRTG Server.exe" -uninstall -silent

You can now proceed with the installation of a PRTG remote probe on this machine.