Fix VAC Was Unable to Verify the Game Session in CS: GO

VAC Was Unable to Verify the Game Session

Nowadays, most of the CS: Go players get the error with the message “VAC was unable to verify your game session in CS: GO” when they were trying to matchmake. If you have a mistake, “VAC was unable to verify the game session” on CS: GO, then my friend, you’re not alone.

It is an annoying and challenging situation for the players when they are not able to matchmake. Now, you do not need to worry as this error can be fixed in a few simple methods. In this article, We are providing here the solutions to fix VAC and were unable to verify your game session error. 

9 Methods to Fix VAC Was Unable to Verify the Game Session in CS: GO

To save your time from searching the internet, we are here with selected solutions for VAC was unable to verify your game session error with only the fixes that have helped users for hassle-free matchmaking in CS: GO.

1. Verify Game Files

If there are integrity issues with your game files, Then error may occur on your CS: GO game. You should check your game files with your Steam client to see if this is the main reason for this issue.

1. You have to click the “Library” on your Steam client.

Click on Library Option on Your Steam Client
Click on Library Option

Then, right-click your game and click “Properties.”

Click on Properties Option
Click on the Properties Option

Then simply click on the “Local Files” and then select “Verify Integrity of Game Files.” 

Select Verify Integrity of Game Files to solve the VAC was Unable to Verify the Game Session error
Select Verify Integrity of Game Files

Wait for the process to end and close. Now relaunch the game and check for error is there or not.

2. Restart your steam client

Stream clients can also cause the issue. So, it is wise to restart the steam client.

1. For this, go to the Steam client and then click on Steam appearing on the left. Now select the “exit” option from the list from a drop-down menu.

Click on Exit Option
Click on Exit Option

2. Next, Open steam client again and click on Steam then, select the Go Offline option.

Click on Go Offline Option
Click on Go Offline

3. Then just press the “Restart in Offline Mode” button.

Just Press the Restart in Offline Mode
Restart in Offline Mode

4. Again, navigate to Steam and click “Go Online.”

5. Simply click on the “Restart and Go Online” button.

Click on Restart and Go Online to fix VAC Was Unable to Verify the Game Session
Click on Restart and Go Online

6. Relaunch the game and see if “VAC was unable to verify the game session in CS: GO” error is gone.

3. Repair steam client

If restarting the Steam client isn’t working, then go for repairing the steam client. For this, you have to search and open cmd. Select Run as Administrator.

Type cmd command in Run Dialog Box
cmd

In command prompt window type “C:\Program Files (x86) \Steam\bin\SteamService.exe” /repair and press Enter. 

Type steam service repair command
Type service command

If your game file is on a different location, then you must change the address. The process may take some time to wait for the process to end. Then run your steam client and launch the game and check if the error is fixed or not.

4. Update your Drivers

You may get VAC Was Unable to Verify the Game Session in CS: GO error if you’re using a wrong driver, or it’s out of date.

You should update your drivers and then check for errors that can be done automatically with Driver Easy.

You must install Driver Easy.

Run Driver Easy and click the “Scan Now” to detect any problem drivers.

Click on Scan Now
Driver Easy

Then click the “Update” button next to each device to download the latest and correct driver for it. You can also click update all to update every driver in PC.

Click on Update Option to Update your drives
Update your Drives

5. Remove Game Directory from Antivirus Scan

The anti-virus software might be the reason for this issue. The software keeps on repairing tools and scanning and applications in the background. So, it may disrupt the VAC settings too and may cause the error.

One of the simple solutions, in this case, is to remove the steam application. For this, go to settings in your anti-virus software and add the Steam application to the excluded files folder.

All you need to do is to exclude the Game directory and Steam file from the scanning process.

6. Restart Your Computer

To function smoothly, the Valve Anti-cheat System utilizes certain computer items to protect the data of users. These items can already be in use by other external apps like anti-virus software. 

This reduces the availability of the required applications to VAC, making it vulnerable for “VAC Was Unable to Verify the Game Session in CS: GO” errors. 

The most common cure here is to restart your PC and try running Steam again. Simply Restart from the power button at the windows tab.

Restart your computer to fix VAC Was Unable to Verify the Game Session
Restart your computer

7. Run Steam Client as Administrator

Normally some of the big games require administrative privileges to run the game smoothly. Hence, if CSGO VAC was unable to verify the game session, you might need to grant full control to Steam.exe. 

For this, press Windows + R to open File Explorer and navigate to C:\Program Files (x86)\Steam.

In the Steam folder, find out Steam.exe and then right-click it to go to its Properties, and under the Compatibility tab, you must tick the box of Run this program as administrator.

8. Disable or Uninstall the Third-party Software

Much third-party software like CCleaner or any other tools can block VAC from verifying your game. So, it’s better to disable it or permanently uninstall it from your PC temporarily. 

According to many users, it has fixed VAC unable to verify for them. You can disable or simply uninstall software in Control Panel > Programs > Uninstall a program > Programs and Feature window > Uninstall. 

Now, check if the error is still there or not.

9. Completely Reinstall CS: GO

If all the methods above haven’t worked, your issue is likely one that won’t be resolved by changing a setting on your PC. 

So, we suggest saving time by reinstalling CS: GO. Reinstalling the game will fix the issue very quickly and will save you having to try lots of different fixes too.

After the successful uninstallation, you’ll need to reinstall CS: GO and check out if the “VAC Was Unable to Verify the Game Session” error persists or not.

Final Words

The “VAC Was Unable to Verify the Game Session in CS: GO” error, which occurs at the time of playing games are irritating. But there is no way to ignore them; hence, removing them is a better option. 

In the VAC was unable to verify game sessions, the solutions are worthy, and you can smoothly remove the error by using these solutions.

It’s not a difficult thing to follow, but you must have the patience to apply all the methods, and surely the error will get fixed. I hope you guys like this article, share your feedback and suggestions in the reply section.