this is dead to me.

[notaovergame]

i looking for an dust bowl server, well i right to join this server. Then boom, i can't play on secure server because of VAC system.

So Peace & Love, Peace & Love but except for one thing, Gabe. you're still greedy pig.

 

[Jermaphobe]

Ok

 

[Metroidz]

Turn your cheats off and see if that works.

 

[Maddo]

Gabe. you're still greedy pig

Not as greedy as those who cheat for the empty glory.

 

[KinCryos]

Then boom, i can't play on secure server because of VAC system.

seeing how your linked Steam account has no VAC bans, I'm going to assume that your problem is something along the line of "A connection to the VAC servers could not be made".
Steam needs/wants elevated privileges for VAC authentication. close Steam, right-click the shortcut and select Run as administrator.