LỖI VAC WAS UNABLE TO VERIFY YOUR GAME SESSION

Do you play Counter-Strike: Global Offensive (CS: GO)? Have you received “VAC was unable khổng lồ verify your trò chơi 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 clip game. Recently, many players complain that they encountered VAC was unable to verify your trò chơi session on CS: GO. It is quite annoying because matchmaking will fail once this error happens.

What is VAC & 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 lớn protect users from the masses that some users who cheat codes to lớn 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 lượt thích CS: GO.

Don’t worry. You can fix “VAC was unable to lớn verify your game session” error easily và 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 khổng lồ “VAC was unable khổng lồ verify your game session” error eventually. An easy way lớn solve the problem is lớn 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: xuất hiện Steam.

Step 2: Click your profile name at the đứng đầu 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 lớn re-enter your trương mục name and password khổng lồ use Steam again. Just click LOGOUT khổng lồ continue.

Step 4: Re-login into your tài khoản 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 trò chơi session” and kiểm tra if the error disappears. If it still exists, you can following the steps below to lớn restart your Steam client.

Step 1: In your Steam client, click Steam from the upper left corner. Then click Exit.

Step 2: xuất hiện 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 và select Go Online. Then in the pop-up window, click RESTART và GO ONLINE.

Step 5: Once Steam is restarted, launch you game and kiểm tra if the error “VAC was unable to lớn verify your trò chơi session” disappears.

If you still see VAC was unable lớn verify your game session on CS: GO, you can move on lớn the next solution.


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Solution 2: Restart the PC

If the certain computer items which are utilized to protect the trò chơi rights of users are already used by other third-party programs, errors like “VAC was unable khổng lồ verify your trò chơi session” might appear. Lớn solve the problem, you can restart your device to kết thúc 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 trò chơi Files

When you encounter “VAC was unable khổng lồ verify the game session” error, there may be some missing or corrupted trò chơi files. You should check them with Steam client.

Step 1: In Steam, click LIBRARY from the tool bar.

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Step 3: Choose LOCAL FILES tab, & 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 & the issue should have been fixed.


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Solution 4: Updated Your Device Drivers

Corrupted or outdated drivers could also lead to “VAC was unable khổng lồ verify the game session” issue. You need to lớn keep your device drivers up-to-date, especially graphics thẻ driver and sound driver.

Here is the tutorial on how khổng lồ update graphics card driver. If the problem still exists, you may also need khổng lồ update other drivers.

Step 1: Press Win + R to xuất hiện Run window. Then input đầu vào 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 lớn finish the process.


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Step 4: You will be asked to restart your computer after the update is installed. Just click Restart now.

After you update the driver, you can run your trò chơi and kiểm tra if the problem has been solved.

Receive “VAC was unable to lớn verify your game session” error message on CS: GO? Here is how to lớn solve the problem.Click to lớn tweet

Solution 5: Repair the Steam.exe via Command Prompt

Another reason for “VAC was unable khổng lồ verify the trò chơi session” problem is that there are errors on the Steam client itself. When there are any damaged or corrupted files or incomplete system configuration files in the client, you might see the mentioned error. In this case, you can repair the Steam.exe with Command Prompt.

Here are the detailed steps.

Step 1: Press Win + R khổng lồ invoke Run window.

Step 2: In the pop-up Run window, input đầu vào cmd in the box và press Enter to mở cửa Command Prompt.

Step 3: Type the following command or copy & paste it to lớn the command và then press Enter to lớn execute it:

C:Program Files (x86)SteaminSteamService.exe" /repair

This might take some time. You need lớn wait patiently until the process is completed. Then restart your PC to lớn make the changes to take effect. Launch Steam and open the game that was stopped by “VAC was unable khổng lồ verify your game session error” to check if this solution works.

Solution 6: Disable or Uninstall Your Antivirus Temporarily

Antivirus software could also be the factor which leads to lớn this “VAC was unable lớn verify the trò chơi session” issue. Because it may disrupt the VAC settings when it is scanning và repairing applications in the background lớn protect your computer from virut attack.

To solve the problem, you should remove the Steam application from the scanning process. You just need khổng lồ navigate to lớn the settings of your antivirus application and showroom the Steam to the excluded files folder. If you still keep receiving the mentioned error, try disabling your antivirus temporarily or even reinstalling the antivirus.

Here is how lớn uninstall a program on PC.

Step 1: Press Win + S to open Search. Then tìm kiếm for Control Panel and open the app.

Step 2: In the đứng top right corner, select View by: Category. Then click Uninstall a program.


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Step 3: In the menu of programs and features, right-click your antivirus and select Uninstall. Then follow the onscreen instructions khổng lồ finish the process.

If the problem is fixed after uninstalling the antivirus, you might need khổng lồ give up this antivirus program và use another reliable one, or tương tác the tư vấn of your antivirus program to get solutions.


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If you get the error “VAC was unable to verify your trò chơi session” while trying to lớn play a certain game, you can follow the solutions in this post khổng lồ remove it.Click to tweet

Bottom Line

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