After installing Language Weaver Edge 8.5.3 the license is not recognized and the Manager.log shows frequent RabbitMQ server startups

Manager.log
[2021-07-08 07:46:26.069] [1035405] NOTICE launchAppWithEnv - Process ID of rabbitmq-server : 32052
[2021-07-08 07:46:27.192] [1035409] NOTICE launchAppWithEnv - Launching: C:\Program Files\SDL\SDL ETS\extra\rabbitmq-server\sbin\rabbitmq-server []
[2021-07-08 07:46:27.193] [1035410] NOTICE launchAppWithEnv - Process ID of rabbitmq-server : 44212
[2021-07-08 07:46:28.323] [1035414] NOTICE launchAppWithEnv - Launching: C:\Program Files\SDL\SDL ETS\extra\rabbitmq-server\sbin\rabbitmq-server []
[2021-07-08 07:46:28.324] [1035415] NOTICE launchAppWithEnv - Process ID of rabbitmq-server : 14880

LW MT Edge requires a presence of Microsoft Visual C++ redistributable (2008, 2013, 2015) 
 

vc_redist_2008.x86.exe
vc_redist_2013.x64.exe
vc_redist_2015.x64.exe

Please check presence of MS VC++ redistributable in Add/Remove Programs and if missing, reinstall it. 




Note:  to see why the VC++ redistributable were not installed, please review bitrock_installer_*.log files under 
c:\Users\[username]\AppData\Local\Temp\

In order to see why the RabbitMQ server is not starting, the following procedure should be performed : 
 

1. Stop Edge service and verify all Edge processes are not running
2. Start windows command prompt as Administrator and run the following
3. Change dir to erlang bin dir

   • cd "c:\Program Files\SDL\SDL ETS\extra\erlang\bin"

4. Set env var for rabbitmq_conf_env_file

   • set RABBITMQ_CONF_ENV_FILE="c:\Program Files\SDL\SDL ETS\conf\rabbitmq-env-conf.bat"
     

5. Set env var for ERLANG_HOME 

   • set ERLANG_HOME=c:\Program Files\SDL\SDL ETS\extra\erlang

6. Start rabbitmq

   • "c:\Program Files\SDL\SDL ETS\extra\rabbitmq-server\sbin\rabbitmq-server.bat"
     

If everything is run correctly, then a user should see the following

 

It was observed that users may be experiencing the error message  "msvcr120.dll  is not installed on the computer" when starting RabbitMQ server.
Msvcr120.dll  is part of  Microsoft Visual C++ 2013 redistributable provided with the Language Weaver Edge 8.5.x application installer.