i put my rcon password and i execute the command:
rcon equip 3(my id) 45< id for laser and the rcon says:
Error! You are the server. You don't have to use rcon.
just use the command without writing rcon in front of it. If you use Listen Servers (creating servers with "New Game" in the cs2d menu) then you don't need rcon!
it's the "more settings"-tab.
search the setting mp_weaponfadeout enter 60 and click apply (also note that weapons only disappear in certain game modes).
if you are using Lua scripts / additional setting files: check those for the mp_weaponfadeout command and either remove it or change it as well.