If you also face the CS2 “VAC was unable to verify your game session” error, check out our solutions below!
In CS2, developed by Valve, players have been reporting issues with the message “VAC was unable to verify your game session.”
This error can be frustrating as it can disrupt matchmaking, preventing players from enjoying a fair online gaming experience.
To ensure fair play and prevent cheating in online environments, some games, including CS2, employ a protection system known as the Valve Anti-Cheat System (VAC).
This system is designed to detect and deter users who use cheat codes or hacks to gain an unfair advantage and improve their chances of winning.
Here is everything you need to know about it!
What is the CS2 “VAC was unable to verify your game session” error?
The “VAC was unable to verify your game session” error typically occurs when your game files are not installed correctly, causing confusion in the Valve Anti-Cheat (VAC) system.
This error means that the VAC system has detected that your game files do not match up how they should.
Valve’s anti-cheat system acts as a barrier to prevent cheaters from gaining an unfair advantage in CS2 matches.
It monitors whether your in-game files have been modified or tampered with to provide an unfair advantage.
The system may trigger this error message when it detects discrepancies or unauthorized changes.
Let’s move on to our fixes for the CS2 “VAC was unable to verify your game session” error!
Restart Steam client
Let’s start with a simple fix. First, restart your Steam client and make a fresh start by relaunching it. To do so:
- Click “Steam” at the top left.
- Hit “Exit” on the drop-down menu.
- Relaunch the app on your PC.
Verify game files
If you get the CS2 “VAC was unable to verify the game session” error in Steam, there might be a problem with your game files.
To fix this error, you can follow these steps:
- In Steam, click Library from the toolbar.
- Right-click on your game Counter-Strike: Global Offensive and select Properties.
- Go to the Local Files tab and click Verify Integrity of Game Files.
- Wait for the process to complete, and then click Close.
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Check if you are VAC-banned
Some players forget they are VAC banne, or some of them get banned for no reason.
Let’s clear the path and see if you were banned from playing the game:
- Open Steam.
- Click on “Steam” at the top left of your launcher.
- Select Settings from the drop-down menu.
- Click on “Account.”
- Look at “VAC Status.“