Existing RLM Servers

RLM is widely spread and many applications use it for licensing. If there is an already running RLM server in your system then it is possible to use it for licensing RealFlow. Another method is to install a new RLM using a different port. The latter method is recommended when the existing RLM is very old or if you want to keep your licenses separated.

Using An Existing RLM

To find out, whether a RLM is running please read → "Step 3: Check for License Managers".

In this case, please look for the installation directory of the already installed RLM – RealFlow 10 requires at lest RLM version 10.1:

  • Then, the license file and the “nextlimit.set” file must be copied to the RLM's directory. 

  • The “nextlimit.set” file can be found in RealFlow's application folder under “rlm”.

  • Restart.

Binding RealFlow's RLM to Another Port

5053 is the RLM's default port. If you are already using a RLM-licensed software, then port 5053 will probably be in use. The solution is to edit your license file. There, you will find a line indicating the used port (example only - use actual Id from your computer):

HOST localhost 0021ffd2d3e 5053

Change “5053” to something like 5052, or 5060, but do not use 5054, because this port is occupied by the RLM's web interface.

Make sure that the port is not blocked by a firewall.

Using Older RLMs From "The Foundry"

Some RLM versions from "The Foundry" might give an error:


1 2 3 4 5 6 7 8 (rlm) Server initialization error. (rlm)  (rlm) This indicates either: (rlm) A settings file incompatible with this RLM version (rlm) - or - (rlm) The ISV server is built with an incorrect RLM license (rlm) - or - (rlm) The ISV server encountered an error processing its options file.


To fix this issue follow these steps:

  • Stop the RLM service.

  •  Back up the original "The Foundry" RLM.exe.

  •  Put RealFlow's RLM.exe to the folder, where the old RLM was placed, and rename it to the naming convention "The Foundry" uses.

  •  Restart the service.