Every computer system is different and has unique settings, or operating system demands. Maybe you also have a RLM application installed already with another software, or you work in heterogeneous networks. Sometimes, read/write privileges are not set correctly, firewalls or routers block the communication between computers, or a certain port is blocked by another software. There are many reasons why the licensing process can fail and therefore we want to give you a few tips for when this happens.
RLM keeps telling me that the license type is wrong
In this case it is very likely that you are trying to use a node-locked license with the RLM. Please bear in mind that node-locked licenses do not require an installation of the RLM server. Please follow the standard procedure for node-locked licenses here.
I cannot access the RLM web interface
There are two standard addresses for the RLM web interface. They can be entered into the address field of your favourite browser:
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The “-n 4” flag is optional and determines the number of ping requests. If the computer is not accessible please check your network connection.
I own a floating license, and at least two computers in a network. The RLM is running, but RealFlow is still unlicensed
Here you have to differentiate between the client and the computer with the RLM. Please take a look at this image:
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Open the RLM's web interface in browser with http://ip_of_computer_with_RLM_installed:5053 and restart the server.
Check the LIC files's extension
One possible reason the licensing process fails is that the LIC file has an additional TXT or RTF extension. This happens when the files' extensions are hidden by default. To check this, please go to your operating system's preferences and make the extensions visible. If there is an extension different from .lic, for example realflow.lic.txt, please remove the extra suffix. Then, try to open RealFlow again.
The “rlm” folder is read/write-protected
Sometimes it also happens that RealFlow does not have sufficient rights to access the LIC file. In this case please activate the appropriate permissions. Windows users should also check that RealFlow's installer is executed with administrator rights: right-click on the installer and enable “Run as administrator”.
RealFlow or the the RLM are blocked by a firewall
In networks, firewalls often prevent programs from communicating with other services or computers. Please check your firewall's settings to see if RealFlow is blocked. If it is blocked or not in the firewall's whitelist, please unblock it or add it to the white list.
Check if the floating license has been installed properly
When you open the RLM's web interface, and click on the “Status” button you should see three tables. In the first table, the “license file” row must show the current RealFlow license. The third table is named “ISV Servers” and there should be a row starting with “nextlimit”. If these two entries are empty or invisible your license files has not been installed correctly. Please repeat the licensing process and check that the license files has been stored in correct directories.
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A single floating can only be used by one concurrent computer. If the license is in use already you will not be able to run an instance of RealFlow on another machine.
The RLM cannot bind to port 5053
When you get this message port 5053 is most probably used by another instance of RLM already. In this case, please read the "Already Existing RLM Servers" chapter.
Check the Id of the computer with the RLM
The main license (the one with the full license text) requires an Id. This Id is unique to a computer and is used by the RLM to license your copy of RealFlow. You can find the Id on a help screen which is shown when you get a message that RealFlow is unlicensed. Click on the "Show Details…" button, and look for the Id (printed in yellow), e.g. 002f90f31eb2.
