Hi there!

I'm not entirely sure if I am matching the right forum..

Is it possible to force a connected player to rename itself?
For example Player 1 is joining the server, he/she has some badwords in his/her name, the player should rename the players name automatically into XYZ.

Thank you in advance!

You can't force them to rename using InSim. You can, however, send a message to them informing them they should change their name (giving reasons why it's currently 'invalid') and kick them from the server. I don't know if any of the currently popular InSim applications (e.g. AIRIO or LFSLapper) can do this. If not, it shouldn't be too complicated to code yourself.

Airio does it