How to Fix VAC Unable to Verify Your Game Session CS2

If you've also started seeing the Steam game session error that VAC was unable to verify the game session while playing Counter-Strike 2, know that you are not alone. Like you, I also faced this Steam error and solved it with an easy fix. However, I've listed a couple more easy fixes for you in case what worked for me doesn't work for you!

What is VAC was Unable to Verify Your Game Session Error?

VAC is Steam's anti-cheat software that will show you the Steam error message "VAC was unable to verify your game session" if it detects that you are cheating while playing CS2 or any other game from Steam. CS2 can sometimes be very competitive, so if you struggle with ranking up, please don't cheat. Instead, get some CS2 boost to give you a head start in the FPS game.

That said, sometimes, you can also see this error message due to an issue in CS 2's local files. Corrupted program files are the most common reason for this for the majority of players. There are several fixes for it, and we will go through each.

How To Fix VAC was Unable to Verify Your Game Session Error in CS2

Here, I've compiled all the possible solutions for this Steam issue, and I hope one of these will help you solve the "VAC was unable to verify your game session" CS error on your system.

Solution 1: Game Restart

This fix worked on my system, so I recommend you start with a PC restart. This will reboot your system and eliminate any temporary files/programs running on your PC that might conflict with VAC while trying to verify your game session.

Solution 2: Verify the integrity of game files (Counter Strike File Verification)

If the game session error persists, I suggest you verify the integrity of all the files instead. To verify game files, open the Steam client, click on the Library tab at the top left, find Counter-Strike 2 in the left sidebar, and right-click on it. Once you right-click, a drop-down menu will open. Select Properties, Installed Files, and then click on the "Verify Integrity of Game Files" setting option. Steam will now verify your game files. Once the integrity of game files has been verified, the VAC error will be gone.

Solution 3: Change Steam Profile Picture and Nickname

Another fix that will work for you is to change your Steam name. If you don't know how to do it, don't worry. Just click on Steam at the top left, go to Settings, and then Account. Here, change your avatar and nickname. Also, if you see any VAC status bans, you can contact Steam support and appeal to remove the ban.

Solution 4: Practice With Bots

Yet another fix for VAC that was unable to verify the game files error is to play an offline mode match with bots. I don't know what happens here, but users have reported that it helps Steam's VAC verify game files and remove the game error message.

Solution 5: Reinstall Counter-Strike 2

This fix is your last resort. Some Steam users reported that uninstalling the game helped fix the VAC was unable to verify your game session error. While in your Steam client library, right-click your game icon, go to Manage, and then click Uninstall. Reinstall the game, and you'll be able to continue playing without any VAC was unable to verify your game session error.