How To Fix VAC Was Unable To Verify Your Game Session? FIXED

VAC was unable to verify your game session: If you are reading this post, then you must be a Counter-Strike: Global Offensive game user. CS: GO users have been receiving an error on their Windows devices while playing this game. When they try to launch the game or are in the middle of the game, an error screen shows up with the message “VAC was unable to verify your game session”.

Counter-Strike: Global Offensive is an online multiplayer first-person shooter game developed by Valve and Hidden Path Entertainment. This is the fourth game in the Counter-Strike game series and is one of the popular games on Steam. VAC in Counter-Strike: Global Offensive game is short for Valve Anti-Cheat. It is an automated cheat-detecting system on Steam.

How to Fix vac was unable to verify your game session

The CSGO VAC was unable to verify your game session error occurs when VAC detects unusual activity. This error has been bugging a lot of Windows CSGO users. So, if you are also here to fix this error on your device, then this guide will help you out. Know the best methods to fix this CSGO VAC error in this post in detailed instructions.

Why Does It Say VAC Was Unable To Verify Your Game Session

VAC (Valve Anti-Cheat) is an automated cheat detecting feature on Steam installation files. This VAC is responsible for tracking your game files and the game data. Most gamers use cheats in games to get an upper hand on the opponent. Since a lot of users try to change the game files and the source code to cheat in games, VAC is used.

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This VAC system detects anomalies in your Steam installation files. If you are found guilty according to VAC, you will receive the “VAC was unable to verify your game session” message. However, if you haven’t done changes to files, but still getting the error, then it can be a false positive. For such situations, know the solutions to fix the VAC error.

How To Fix VAC Was Unable To Verify Your Game Session

Below are the most effective and working methods which we have tried and then listed out here. Follow these simple methods to fix the VAC verification error on your devices.

1. Restart Your Device

A mistake with the VAC system on Steam can cause it to not verify your game session. Therefore, start by restarting your device. Firstly, exit the game and close all the running programs on your device. Go to the Start menu and click on the “Power” icon. Select “Restart” to reboot the device. Once your PC restarts, launch Steam and play Counter-Strike: Global Offensive. If the error still appears, try the next method.

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2. Run Steam Client As Administrator

If your game is still showing the VAC was unable to verify your game session CSGO error, then run Steam client with admin privileges. To do so, follow the steps given below.

  • Go to the Cortana search option on your Taskbar and search for “Steam”.
  • Right-click on the “Steam” app to get the options menu.

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  • Now, go to the “More…” submenu and click on “Run as administrator”.
  • When prompted to the confirmation window, click on “Yes”.
  • Steam will launch as administrator on your device.
  • Open CS: Go on Steam and check if the VAC error still shows up.

3. Restart Steam Client In Offline/Online Mode

Follow the steps given below to restart the Steam client in offline and online mode.

  • Go to the “Steam” client on your PC and open it on your device.

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  • Now, click on the “Steam” menu and click on the “Exit” option.
  • Wait for a minute or two and launch Steam again on your PC.
  • Next, go to the “Steam” menu and click on the “Go offline” option.

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  • When prompted to the next page, click on the “Restart in offline mode” button.

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  • Then, go to the “Steam” menu again and this time select “Go online”.

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  • When prompted to the next page, click on the “Restart and go online” button.

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  • Now, start playing Counter-Strike: Global Offensive on your Steam client.
  • The error will not show up hopefully.

4. Verify Integrity Of CS: GO Game Files

The game files on your Steam client need to be verified properly to run games smoothly. If the files are left unverified, then it can cause the VAC unable to verify the game session message. So, verify the game files by following these steps.

  • Open the “Steam” client on your PC and then click on the “Library” tab.
  • In the installed games, scroll down and find “Counter-Strike: Global Offensive”.

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  • Now, right-click on CS: GO game and click on the last option “Properties”.
  • On the CS: GO Properties window, go to the “Local Files” tab.

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  • Next, select the “Verify Integrity Of Game Files” option.
  • Wait patiently until the game files are verified and then exit the Steam client.
  • Launch CS: GO on your device. If the VAC error still appears, try the next method.

5. Repair Steam Files On Windows

If the VAC Unable to Verify Game Session message still doesn’t disappear from your screen, repair the Steam files. For that, follow the simple steps given below.

  • Go to the “Steam” client on your PC and open it on your device.
  • Now, click on the “Steam” menu and click on the “Exit” option.
  • Next, right-click on the Start menu and select the “Run” program.

Why Does It Say VAC Was Unable To Verify Your Game Session

  • In this Run box, type the command which is given below.
    “C:\Program Files (x86)\Steam\bin\SteamService.exe” /repair
  • Click on “OK” or press the Enter key to start the repair.
  • Once the repair of files is finished, close the window and check the CS: Go game.

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6. Reinstall CS: Go To Fix VAC Was Unable To Verify Your Game Session

If none of the methods given above are able to fix the VAC was unable to verify your game session Counter-Strike: Global Offensive error, then uninstall the game. You can again install the game on Steam easily without any issue. Here is how to uninstall Counter-Strike: Global Offensive on Steam.

  • Open the “Steam” client on your PC and then click on the “Library” tab.
  • In the installed games, scroll down and find “Counter-Strike: Global Offensive”.

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  • Now, right-click on CS: GO game and click on the “Uninstall” option.

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  • A confirmation window will appear. Click on “Delete”.
  • Then, visit the https://store.steampowered.com site and install CS: Go game.
  • The VAC was unable to verify your game session error will not show up again.

FAQs

Why is CSGO showing VAC was unable to verify your game session?
VAC (Valve Anti-Cheat) is an automated cheat detecting feature on Steam. If the VAC system detects anomalies in your game files, you will get the “unable to verify your game session” error.
How to fix VAC was unable to verify the game session?
  • Restart your PC
  • Run Steam as administrator
  • Restart the Steam client
  • Verify the integrity of game files on CS: GO
  • Repair Steam files
  • Reinstall Counter-Strike: Global Offensive
How do I fix the VAC error in 2021?
Run Steam as administrator to fix the VAC error on Steam games.

  • Go to the search option on Taskbar and type “Steam”.
  • Now, right-click on the “Steam” app to view the options.
  • Go to “More..” and click on “Run as administrator”.
Can I verify my VAC game session?
Verify the integrity of game files to fix the VAC was unable to verify your game session error.

  • Open the “Steam” client on your PC and then click on the “Library” tab.
  • Now, right-click on CS: GO game and click on the last option “Properties”.
  • Go to the “Local Files” tab and click on “Verify Integrity Of Game Files”. 
How to uninstall Counter-Strike: Global Offensive on Steam?
  • Open the “Steam” client on your PC and then click on the “Library” tab.
  • Now, right-click on Counter-Strike: Global Offensive, and click on “Uninstall”.
  • A confirmation window will appear. Click on “Delete”. 

Conclusion

We have shared the best and effective methods in this post that will be able to resolve the VAC error easily. Don’t panic or worry if CS: GO shows the “VAC was unable to verify your game session” error on your game. Keep calm and try the solutions given here. The error will be fixed within no time. Keep visiting the Lavrusik website for more interesting and useful guides.

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