That didn't fix it for me 
here is my log file:
L 09/02/2013 - 14:23:26: Log file started (file "logs\L0902005.log") (game "C:\SRCDS Non-Steam Windows (SteamPipe)\SRCDS Non-Steam Windows (SteamPipe)\css_ds\cstrike") (version "5337")
L 09/02/2013 - 14:23:26: server_cvar: "sv_tags" "friendlyfire,non-steam"
L 09/02/2013 - 14:23:27: server_cvar: "sv_tags" "friendlyfire,non-steam"
L 09/02/2013 - 14:23:27: World triggered "Round_Start"
L 09/02/2013 - 14:23:27: server_cvar: "sm_nextmap" "de_piranesi"
L 09/02/2013 - 14:23:29: Connection to Steam servers successful.
L 09/02/2013 - 14:23:29: Public IP is 87.97.236.43.
L 09/02/2013 - 14:23:29: Assigned anonymous gameserver Steam ID [A-1:2694881281(3622)].
L 09/02/2013 - 14:23:29: VAC secure mode is activated.
L 09/02/2013 - 14:23:30: S3: Client connected with invalid ticket: UserID: 2
L 09/02/2013 - 14:23:31: World triggered "Round_Start"
L 09/02/2013 - 14:23:33: [META] Loaded 0 plugins (1 already loaded)
L 09/02/2013 - 14:23:33: server_message: "quit"
L 09/02/2013 - 14:23:33: Log file closed
That s3 thing is showing in the console when i connect i told a friend who bought the game from steam to connect and he connected without a problem but when non-steamers try to connect server kicks them and they get the message server validation rejected and in my server console S3 Ticket problem please find a way to fix this problem i searched in the internet for fix but when i find the same topic they say there is no fix for this
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I can LS you and give you ip to the server for you to see if you want.
