2022 FIX: VAC WAS UNABLE TO VERIFY YOUR GAME SESSION
Do you play Counter-Strike: Global Offensive (CS: GO)? Have you received “VAC was unable to verify your game session”? Here are 3 solutions offered by MiniTool Software and you can have a try if you’re bothered by this issue.
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Counter-Strike: Global Offensive, developed by Valve and Hidden Path Entertainment, is a multiplayer first-person shooter video game. Recently, many players complain that they encountered VAC was unable to verify your game session on CS: GO. It is quite annoying because matchmaking will fail once this error happens.
What is VAC and why does this error happen? Let’s see in the following contents.
For a fair and non-ludicrous experience in online settings, some games have provided a protection technique, Valve Anti-cheat System (VAC). It is designed to protect users from the masses that some users who cheat codes to improve the chances of winning.
It sounds like a wonderful technique. However, it seems that there are some problems with the VAC program especially for the popular games like CS: GO.
Don’t worry. You can fix “VAC was unable to verify your game session” error easily and quickly by yourself. Just try the following solutions one by one.
Solution 1: Re-Login into or Restart Your Steam Client
There may be some changes in the regular operating system framework, which leads to “VAC was unable to verify your game session” error eventually. An easy way to solve the problem is to re-login into your Steam account. If it doesn’t work, you can try restarting your Steam.
Let’s see the detailed steps.
Step 1: Open Steam.
Step 2: Click your profile name at the top right corner of Steam. Then select Log out of account from the drop-down menu.
Step 3: There will a pup-up window reminding you that this will log you out of Steam and you will need to re-enter your account name and password to use Steam again. Just click LOGOUT to continue.
Step 4: Re-login into your account by following the onscreen instructions.
Then you can try opening CS: GO or the other program that receives the error “VAC was unable to verify your game session” and check if the error disappears. If it still exists, you can following the steps below to restart your Steam client.
Step 1: In your Steam client, click Steam from the upper left corner. Then click Exit.
Step 2: Open Steam again. In the interface, click Steam and choose Go Offline.
Step 3: In the following window, click RESTART IN OFFLINE MODE.
Step 4: Click Steam option and select Go Online. Then in the pop-up window, click RESTART AND GO ONLINE.
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Step 5: Once Steam is restarted, launch you game and check if the error “VAC was unable to verify your game session” disappears.
If you still see VAC was unable to verify your game session on CS: GO, you can move on to the next solution.
Solution 2: Restart the PC
If the certain computer items which are utilized to protect the game rights of users are already used by other third-party programs, errors like “VAC was unable to verify your game session” might appear. To solve the problem, you can restart your device to end all the programs which might lead to this error.
Then launch Steam and check if your CS: GO works properly without the error message about VAC.
Solution 3: Verify the Game Files
When you encounter “VAC was unable to verify the game session” error, there may be some missing or corrupted game files. You should check them with Steam client.
Step 1: In Steam, click LIBRARY from the tool bar.
Step 2: Right-click your game Counter-Strike: Global Offensive and select Properties.
Step 3: Choose LOCAL FILES tab, and then click VERIFY INTEGRITY OF GAME FILES.
Step 4: Wait for a while patiently. When the process is completed, click CLOSE.
Then you can launch your game and the issue should have been fixed.
Solution 4: Updated Your Device Drivers
Corrupted or outdated drivers could also lead to “VAC was unable to verify the game session” issue. You need to keep your device drivers up-to-date, especially graphics card driver and sound driver.
Here is the tutorial on how to update graphics card driver. If the problem still exists, you may also need to update other drivers.
Step 1: Press Win + R to open Run window. Then input devmgmt.msc and click OK to enter Device Manager.
Step 2: Double-click Display adapters to expand it.
Step 3: Now right-click your graphics card and select Update driver. Then, choose Search automatically for updated driver software and follow the onscreen instructions to finish the process.
If you get the error “VAC was unable to verify your game session” while trying to play a certain game, you can follow the solutions in this post to remove it.Click to Tweet
Bottom Line
Don’t worry if you see “VAC was unable to verify your game session” error message when you want to launch a game like CS: GO. These solutions above are tried by plenty of users and they have fixed the problem successfully. Hope one of the solutions could also be helpful for you.
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