How to Fix VAC Unable to Verify your Game Session

If you are trying to play CS: GO and all of a sudden, a VAC Game session error pops up on your screen you are not alone. Many CS: GO players have encountered this problem with matchmaking.

As you know, being unable to enter matchmaking is really frustrating because you can’t play the game. You are stuck on the home screen with nothing to do.

Lucky for you, this problem with VAC is very easy to fix. Follow the guide below to help you solve this problem.

Method 1: Restart your Steam Client

You can get this error because there are some instances where steam encounters a bug or error within its system. Restarting the client will help you in resolving this issue.

Step 1: On your steam client, click on Steam on the menu bar

Step 2: Click on exit

Step 3: Open Steam Client

Step 4: Click on Steam again on the menu bar

Step 5: Select Go Offline

Step 6: Now a pop-up window will appear, Press Restart in Offline Mode

Step 7: After restarting steam, click on Steam again on the menu bar

Step 8: Click on Go Online

Step 9: Then, click on Restart and Go Online

Method 2: Verify Integrity of Steam Game Files

Step 1: Open Steam

Step 2: Log in to your account

Step 3: Go to Library

Step 4: Right Click on the game that you are having problems launching

Step 5: Click on Properties

Step 6: Click on the Local Files tab

Step 7: Click on Verify Integrity of the game

Step 8: Wait for the process to finish

Method 3: Repair Steam Client in CMD

Step 1: Press on Windows key + S and Search for Command Prompt

Step 2: Click on Run as Administrator

Step 3: On Command Prompt, Type the following lines and hit Enter

“C:\Program Files (x86)\Steam\bin\SteamService.exe” /repair

Step 4: After repairing Steam, try to run CS: GO again and see if the problem is fixed

See Also: What to Do When Steam Won’t Open