Your server is out of date. Please update and restart

How FIx The Problem

Your server is out of date. Please update and restart

Download Halflifeupdatetool.

install it
then

run commnad " HldsUpdateTool.exe -command update -game cstrike -dir . "

it wil download all reqd files for Counterstrike Dedicated Server

Then Download and Use Patch for nonsteam users

patch download