This problem arises when you are trying to use a remote Reactis License Manager. The error message indicates that your local instance of Reactis is unable to communicate with the Reactis License Manager. There are several possible reasons for this:
After running the Reactis installer, you must configure Reactis to access a license. You may either configure Reactis to
The License tab of the Global Settings dialog allows you to view and modify how your installation of Reactis is configured to access a license. If one or more remote License Managers are available in your organization, then you may add them at this point and continue with your invocation of Reactis.
If you are trying to access a local license file and get this dialog, then there is a problem with your license file. Note that no changes may be made to the file that Reactive Systems digitally signs and sends you. The local license file you receive by email should be placed in the Reactis installation folder. If you installed in the default location, the license file should be saved to: c:\Program Files\Reactis V2017.2\rsilicense.dat
This message indicates that the maximum allowable number of concurrent invocations of Reactis has been reached for your installation of Reactis. If you are using a local license file, this means that you probably have another instance of Reactis already running. If you are using a remotely running License Manager, then the maximum number of licenses controlled by that License Manager are being used by others.
Clicking Ok in the error dialog causes the License tab
of the Global Settings dialog to appear. This dialog presents
information about how your installation of Reactis is configured to access
a license. If remote License Managers are available in your organization,
but not listed here, then you may add them at this point and continue with
your invocation of Reactis. If you have already configured Reactis to
access all available License Managers, then you can use this dialog to view
who is currently using each license. See Chapter Installing Reactis of the Reactis User's Guide for more details on
configuring license settings using this tab of the Settings
Each Reactis license file includes a line that specifies a MAC address
of an Ethernet card installed in the machine on which the file resides.
If the address in the file does not match the one in your computer, then
you will get this error. This might happen if you are using a laptop and
remove a network card, or if you upgrade your machine. In the former
case, please insert your network card; in the latter, please contact
This occurs if you installed Reactis so that it accesses a local License File (i.e. without a License Manager). Each such installation of Reactis is tied to a specific machine (via a MAC address); if you change your machine, then your Reactis license file is no longer valid, and the software will not work.
Contact Reactive Systems for assistance when this situation arises.