I don't understand. How are you starting the jRDC server? Why are you starting it multiple times?
i started jRDC2 with Double Click on Windows 10 x64. The point of multiple times executing of jRDC2 is i'm look from end user side. The end user (my client) told me if he clicked for no reason he said however your server shouldn't be run many times in windows task manager and you should limit one instance he said. so i asked in forum. anyway now the problem is solved.
I created shortcut to desktop and Open Run box .. Type shell:startup and put that shortcut in folder. So everytime computer bootup. jRDC2 only ONE instance also run.
No need to let double click jRDC2 to my client.
Everything is now OK. Thank you for replying this post and my another post.
B4X suite makes me really really save.