Valve Anti-Cheat or VAC is a new algorithm that protects game servers from cheaters using codes. This tool guarantees equal opportunities for all server players, and those who like to cheat get blocked. It is worth noting that VAC works automatically - even the server administrator cannot block on behalf of this tool. What to do if the positives were false? For example, a common problem is the message: “You cannot play on secure servers for one reason” or “Your computer is blocking the VAC system”, appearing in CS:GO, Dota 2 and other games.
Origin of the error
The message appears if, as a result of checking game files, changes are detected in libraries and exe files located in the root - this is the general explanation of the developers. In fact, the reason could be any third-party application that blocks or interferes with the normal operation of the tool, as well as damaged Windows or Steam files. Also, the source of the failure may be incorrect network settings (vpn, proxy, public DNS, unstable connection).
Fixing the error
Today there is no universal or guaranteed method that is effective in all cases. Therefore, you need to try different solutions. Gamers often complain that many solutions are only temporary. For example, you have to perform actions before each start, or the problem returns after a few minutes. However, sometimes it is possible to eliminate the bug permanently. Why not try this?
Standard manipulations
If you have problems with your laptop or PC, do the following:
- deleting temporary files and cleaning the operating system from garbage, correcting registry errors - this will help CCleaner;
- checking for driver updates for components - official versions only;
- scanning for malware and unwanted software – AdwCleaner, Malwarebytes;
- software uninstallation, which may be the cause of the bug (for example, iObit products), disabling the Windows Firewall.
By the way, read this article too: How can you become invisible in CS:GO via the console
After this, we recommend running the self-diagnosis and recovery model by entering the command in the command line SFC /SCANNOW. To avoid typing it out manually, just copy the inscription, and in the command line, right-click and select “Paste.” If the check does not reveal any problems, then we move on.
Checking the game's Cache
In Steam, we find the library and the desired game, for example, CS:GO, and go to its properties. Interested “Local files”. There is a button in this section “Cache integrity checks”. After completing the check, reboot the PC and try to play. The downside of this method is that it most often helps for one time, until you restart the PC or Steam.
“Checking cache integrity” for CS:GO files
Reinstall Steam
Often, this is what helps get rid of the problem forever. You need to uninstall the client according to all the rules:
DEP
This is built-in protection that has much in common with an antivirus. It happens that disabling it leads to various bugs, one of which is related to VAC. To enable the factory settings of this parameter, you need to:
- Open a command line as Administrator and enter: bcdedit.exe /set (current) nx OptIn.
- As an experiment, try disabling the service while playing if the options described above do not help. To do this you need to issue another command: bcdedit.exe /set (current) nx AlwaysOff. Don't forget to restore the original value after playing.
Useful commands
The command line is a powerful tool in the right hands. What commands can I try to write in the console? Commands are written without quotes.
- To check the integrity and update the system kernel configuration: "bcdedit /deletevalue nointegritychecks" And "bcdedit /deletevalue loadoptions".
- Disabling debugging: "bcdedit /debug off".
- Enabling the DEP service: "bcdedit /deletevalue nx".
Do not forget that some software does not allow the VAC service to work normally. If you suspect some software, try removing it and starting the game. Unfortunately, in some cases the “You can’t play on protected VAC servers” bug can be solved by reinstalling the operating system. We hope it doesn't come to that and you find a solution. At the end there is a video instruction with the solutions described above.
Hello, my friend. Today we will talk about the error that crashes when you try to log into cs go, namely “The VAC system was unable to verify your gaming session.” Due to the fact that the VAC CS: GO system sometimes does not allow me to play the game, I decided to collect all possible working solutions to this problem. Sit back, in about 5 minutes you will be able to play cs go :) go go go
VAC CS: GO system, why is it needed?
The VAC CS:GO system was introduced for a reason. She blocks cheating commands so that no one can cheat. Roughly speaking, the system performs a useful function and makes the game fair. Since there is no perfectly working program in the world, the VAC CS: GO system is no exception; it has its own shortcomings that lead to the fact that you cannot play now.
Solution to the error “VAC was unable to verify your gaming session”?
I collected all the existing methods to combat this error.
1. Run Steam as administrator
There may be a problem with Steam or Windows is broken after an update. The option is banal, but it helps.
2. Clear Cache on Steam
In the Steam library, select “View”, then “Settings”. In the “Downloads” tab there will be an option “clear download cache”. Just like the picture. 
3. Disable Windows Firewall
We find the Windows firewall on our computer through “search” and disable it, after which we try to enter the game.
4. Update damaged CS GO game files
Right-click on CS GO in Steam - then click “properties” => “Check integrity of game files.” 
The system will check for damaged files in your cs go and, if necessary, download new ones. If it finds damaged files, but auto-download does not help, you need to reinstall CS GO on your computer.
5. Restore DEP settings
DEP - can be disabled, because of this the servers of the VAC cs go system simply cannot detect it. It is necessary to restore the default settings. To do this, exit Steam, launch the command line as administrator and enter the command “ bcdedit.exe /set (current) nx Optln", press enter and start the game.
6. Check Windows settings
Check if the time and time zone settings are correct. The VAC CS:GO system is time zone sensitive.
Reboot your router and check your network connection to make sure everything is working.
7. Turn off or remove NVIDIA GeForce Experience
Often causes problems with logging into cs go. It may be that even after uninstalling the program, the error “The VAC system was unable to verify your gaming session” still remains. Clear your download cache and everything will be fine.
8. Reinstall Windows
The most desperate and last option to solve the problem is to reinstall Windows. If all else fails, then, unfortunately, bro you need to reinstall Windows.
Frequently asked questions:
How to fix this error?
What does this error mean?
This error is caused by third party software conflicting with the game or Steam client. To resolve this error, you need to disable or remove the problematic software.
What usually causes this error?
There is software that can cause a conflict and usually causes this error. If you are running any of the following programs, please disable them while playing:
- CCleaner
- Powershell
- Sandboxie
- Cheat Engine
- IObit Start Menu 8
- Process Hacker
- DLL Injectors
- Hypervisors
- Steam Idlers
Restart your computer
If this error occurs when connecting to any server, exit Steam and restart your computer.
Restore your Steam service
The problem may be related to a problem with the Steam service. Try the following:
- Log out of Steam.
- Click the Start button > Run (or the Windows key + R).
- Enter the following command:
"C:\\Program Files (x86)\\Steam\\bin\\SteamService.exe" /repair
NOTE: This command may take several minutes to complete and requires administrator rights. If you installed Steam in a different folder, replace the path C:\\Program Files (x86)\\Steam to the desired one.
Restore PC boot options to default
Kernel Integrity checks, Kernel Debugging, and Data Execution Prevention (DEP) must be configured by default to play on VAC-protected servers.
If you receive the following error when you run these commands, it means they are already configured by default:
- The value is protected by Secure Boot policy and cannot be modified or deleted.
To restore boot options to default, please do the following:
NOTE:
- Log out of Steam.
- Click the Start button > All programs > Standard.
- .
- At the command prompt, enter the following commands, pressing Enter after each one:
bcdedit /deletevalue nointegritychecks
bcdedit /deletevalue loadoptions
bcdedit /debug off
bcdedit /deletevaluenx
- Restart your computer.
- Launch Steam and check if the error remains.
System data recovery
This problem can be caused by corrupted system files. You can run System File Checker on your Windows system, which will repair any damaged or missing files, as follows:
NOTE: If you have Windows 8, you need to press the Windows and X keys simultaneously and then select Command Prompt (Admin).
- Log out of Steam.
- Click the Start button > All programs > Standard.
- Right-click on "Command Prompt" and select Run as administrator.
- At the command prompt, type the following command and press Enter:
- When the operation is completed, restart your computer, launch Steam and check if the error remains.
Many people playing Cs:Go have encountered this error: “ Your computer is blocking the VAC system“.
It came out when you were playing a competitive game and got banned, or when you were just playing with friends. You immediately ask yourself: “What the hell, I don’t have cheats for what?!”
After that, you immediately look on the Internet for answers on how to get rid of this error and why it appeared. And then you found, say, a video on YouTube, did everything as they said, you’re happy and go back to the game.
But not everything is so simple, after a while it comes out again and then it starts to BOMB you. You have searched the entire Internet, but there are no answers to your error, you have tried everything in the world and nothing has helped you.
I encountered the same error, it popped up almost every game and it made me very angry. I tried EVERYTHING, watched videos, read articles on the Internet, nothing helped, the same thing was written everywhere:
- Disable DEP
- Restore Steam Services
- Enable kernel integrity checks
- Disabling kernel debugging
But all of the above removed the error for a while! In this guide, I will tell you about 4 ways that will remove it forever.
Third Party Software
This error can be caused by third party software that wants to improve your system, but they interfere with Steam performance by deleting program files. These programs include:
- IObit Start Menu 8
- CCleaner
- Process Hacker(cheat)
- DLL Injectors(cheat)
- Cheat Engine
If you have at least one program installed from the list above, then remove it and restart your computer.
Antivirus
Paid antiviruses have more advantages and have more features. For example, anti-spying or anti-spyware protection. That is, they think that Steam is a spyware program and blocks or deletes Steam files. To fix this, add the contents of the folder where Steam is installed to the exclusion list .Here is a list of PAID antiviruses that interfere:
- VIGuard
- AVG 7.5
- Norton/Symantec
- NOD32
- F-Secure's
If the problem persists, try disabling or temporarily uninstalling the program.
Hidden Processes
Some applications may load when Windows starts and not be visible. For example, they do not appear on the Windows taskbar, but are listed as active processes and use resources on your system. These programs can cause crashes and other problems in games and Steam.
Unnecessary programs running in the background can:
- Slow down the system performance
- Cause errors when installing programs
- Cause audio or video problems in games
- Lead to crashes and other consequences
To disable background applications you need to:
1.Click “Start” ->
2.Type msconfig in the line and click OK.
P.s I use this method, but if you know another method, you can use it.
List of applications incompatible with the in-game overlay
- X-Fire
The in-game overlay may not work if X-Fire is running and trying to render its own chat interface in the game the player is running.
Solution:
Close X-Fire or configure the option “Do not run the in-game X-Fire overlay in games not launched through X-Fire.” - Windows Blinds
This application is known to interfere with the in-game overlay in some games.
Solution:
We are currently working to resolve this issue. Until then, we do not recommend using Window Blinds with Steam. - Ventrilo
It is known that assigned hotkeys for Ventrilo may no longer work with the Steam overlay.
Solution:
This is a known Vista issue. Running as administrator resolves this issue.
Standard solutions to the problem
Enabling DEP
DEP (Data Execution Prevention) must be enabled to play on VAC protected servers. To restore DEP settings to default, you need to: Exit Steam
Click the “Start” button -> “All Programs” -> “Accessories”. Then you need to right-click on “Command Prompt” and select “Run as administrator”.
In the command prompt window, type the following command and press Enter
bcdedit.exe /deletevaluenx
Restoring the Steam Service
This problem may be due to a failure of the Steam Service. In order to restore it you need:
Click “Start” -> “Run” (Or press Win+R)
Enter the following command:
“C:\Program Files (x86)\Steam\bin\SteamService.exe” /repair
(If you installed the Steam client using a different path, replace the path with the correct one.)
This command requires administrative privileges and can take several minutes to complete
Launch Steam and check if the problem persists.
Enabling kernel integrity checks
Kernel integrity checks must be enabled to play on VAC protected servers. To enable kernel integrity checks, you need to:
Quit Steam
Click “Start” -> “All Programs” ->
In Windows 8, you need to press the Windows Key + X combination and select “Command Prompt (Admin)” from the menu.
On the command line, type one by one:
bcdedit /deletevalue nointegritychecks
bcdedit /deletevalue loadoptions
After that, close the command prompt and restart your computer. After rebooting, launch the game and check if the problem persists.
If the problem persists, follow the next step.
Disabling kernel debugging
Kernel debugging must be disabled to play on VAC protected servers. To disable kernel debugging, you need to:
Quit Steam
Click “Start” -> “All Programs” -> “Accessories”, right-click on “Command Prompt” and select “Run as administrator”.
In Windows 8, you need to press the Windows Key + X combination and select “Command Prompt (Admin)” from the menu.
In the command prompt window you need to enter the following command
bcdedit /debug off
Close Command Prompt and restart your computer.
After rebooting, launch the game and check if the problem persists.
Another way
1. First, exit Steam;
2. Next, go to Start->Control Panel;
3. Select the type: small icons; 
4. Next we go to: Administration; 
5. Then select: Computer Management; 
6. In computer management, go to: Local users; 
7. Next, go to the folder: Users; 
8. Select the user Administrator;
9. In the tab: General, set the following parameters;
*Full name– (any will do, for example: Admin Rights)
*Prevent users from changing passwords- (No)
*Password does not expire– (Yes)
*Disable account- (No)
Final steps:
Open a command prompt as administrator and enter the following commands into it:
1. bcdedit.exe /set (current) nx OptIn
2. net user Your name /active:yes
For example: net user Evgeniy /active:yes
Since ancient times, from the very beginning of the appearance of multiplayer games on Steam, various cheats for cs go, codes and similar tricks began to appear to bypass the system and give the user of hacker software certain advantages over other players. Using cheats is, at a minimum, not fair play. After all, the rest of the players try to achieve their results on their own, in a fair and equal way, using only their skills and desire to learn. In this regard, there is a constant fight against cheaters; various anti-cheat programs are being developed that are ready to punish anyone, even the most cunning cheater. One of the so-called super anti-cheat is the VAC system, developed by VALVE. This system is used in many games on the STEAM platform, one of such games is CS:GO. Of course, if you are looking for a way to remove the vac ban in cs go, then most likely you will be disappointed. After all, the system, which is currently considered flawless and the most modern, of course, will sooner or later find flaws in it, because there are no fewer talented hackers. But now remove VAC ban in CS GO most likely impossible!
Is VAC impeccable?
Most likely, you have read not a single article about how to remove VAC ban in CS:GO, therefore you are sure that this is not possible. After all, this anti-cheat is used by Valve in almost all online projects on their platform. Which means that this anti-cheat has not yet failed, it has not been bypassed or hacked. Any cheater has at least once thought about how to avoid stumbling upon VAC. This is because this anti-cheat program scans any online server, in a particular game, and looks for vulnerabilities in it, as well as unplanned changes in the gameplay. He will immediately react to this, and if your actions show signs of using prohibited programs, he will immediately ban you. And it will do it automatically. The answer to the question posed is Stan - Yes, VAC ban, at the moment it is considered impeccable. No glitches were noticed in his work; there are various rumors about him on the Internet.
How long does a VAC ban last?
If you are still banned, and you are trying your best to find a way to bypass this anti-cheat program, and you are asking questions left and right - how to remove vac ban in cs go, then you know that the answer is the same everywhere, lifting such a ban is unrealistic. But how long will it take to be banned by VAC? The answer is unlikely to please you, because this anti-cheat is one of the few that bans you forever, which means that you won’t be able to play from your account in which you received a ban in CS:GO and you will have to create a new account and buy the game again and never use cheats again, at least in STEAM games. Moreover, if you banned VAC for example in CS GO, then you can easily be banned at the same time in other games, if you have them. Which is quite serious and very unpleasant. But who can be to blame besides yourself?
Tiny chance to lift VAC ban
Are you still not giving up and trying to find an answer to the question posed, about how to remove vac ban in cs go, then we are ready to provide you with the only relevant chance. But this chance is very, very small. And so, it consists of contacting user support. The employees responsible for this service are rather reluctant to respond to requests and questions related to VAC. After all, they are confident in its impeccability and the possibility of error is excluded. That is, in order to answer you, you should write in as much detail as possible, adding maximum confidence and adequacy to your letter. Explain everything as clearly and competently as possible. And then, perhaps, your letter will be responded to. But if they do answer you, this does not mean that you were unbanned, it only means that your letter was considered. Most likely, you will still not be unbanned, because, as mentioned above, Steam employees are confident in the flawless and perfect operation of the VAC anti-cheat.
What to do if you received a Vac ban?
If you nevertheless treated other players irresponsibly, and also to yourself and used a cheat in the game CS:GO, then most likely you received a ban, and if this ban has limits, then you should wait until it ends and never use cheats again. But if you are still banned by VAC, then there is no point in waiting, because this ban is lifelong and is practically not discussed. But what to do then? The answer is very simple and as logical as possible. Create a new account, buy the game again and never use cheats in your Steam games again.
