Vac system error. The VAC system was unable to verify your gaming session - what to do. Enable Data Execution Prevention service

17.10 2017

Servers protected by the VAC anti-cheat system allow you not to be afraid of cheaters. But sometimes ordinary players for some reason cannot play them. The computer prevents you from doing this by blocking the system. And then, when you try to log into MM, the CS GO client displays the message “Your computer is blocking the VAC system,” which is very inconvenient in CS GO, and you don’t know what to do.

It's time to get rid of the VAC Error and start playing normally in competitive and other matches. To do this you will have to perform several operations.

Why does the problem occur and how to fix the error?

As a rule, a computer can block VAC anti-cheat due to file corruption, its own prohibitions, or even viruses. It is possible to reliably find out what exactly is preventing you from playing normally and causing the message “Your computer is blocking VAC” in CS GO only through the process of correction. Therefore, you will have to look for what is preventing the anti-cheat system from checking the game files for purity, using the “treatment” methods described below.

Another common reason is the operation of an antivirus or various cleaning programs like CCleaner. In the process of destroying viruses and garbage, they can capture some of the Steam files or games themselves. So remember, have you checked your computer lately? Were you able to play on secure servers after this? If not, then the reason lies here, and it can be easily cured by restoring the cache.

Cleaning your computer with programs

Perhaps an evil virus got into your computer and corrupted all the files. Since nothing works anyway, we will check the computer with programs that catch these same evil viruses.

We will need a standard antivirus or, if it does not exist, the Doctor WEB CureIt application. It must be downloaded from the official website of the developers and launched. We select all the files on the computer for scanning - this will definitely catch the pest.

But you will have to be patient. The best option is to leave the antivirus running overnight. Because if there are a lot of files on the computer, it will be difficult for the program to sift through them all in a short time.

Checking game cache on Steam

After removing all viruses, if any, you need to take care of the cache. As a rule, files in the game are damaged by a virus or unsuccessful player intervention. And then you can try to restore them.

For this purpose, Steam has a very useful function - checking the game cache. It was built in specifically for cases when the game is on the computer, but cannot start due to some problems on the user’s side.

It's easy to check the game. To do this you need:

1. Launch Steam and wait for it to fully load;
2. Go to the “Library” section;
3. Find in the CS GO list;
4. Right-click on the game;
5. Select the “Properties” section at the end of the list;
6. In the window that just opens, find the “Local Files” tab;
7. Log in and click on the “Check integrity of game files” button;
8. Wait until Steam finishes checking and restoring damaged (failed) files.

After this, it’s worth checking whether it worked. If not, move on to the next method of saving the game and your own nerves.

Enable Data Execution Prevention service

Sometimes it happens that due to the lack of Data Execution Prevention (DEP) service, the game refuses to work. Sometimes even on Windows 10. Therefore, you can try to restore it to regain the ability to enjoy skating rinks on protected servers.

And for this you need:

1. Open Command Prompt as administrator;
2. In the black window that appears, manually enter the command “bcdedit.exe /set (current) nx OptIn”. Naturally, without quotes. Remember that you won’t be able to copy this command - you’ll have to write it by hand;
3. Press Enter and wait;
4. After execution, restart the computer.

Of course, this is far from the most likely option. But often players get such a block precisely because of him.

Nothing helped? Uninstalling Steam

If restoration by all means does not help for some reason, you will have to do the worst and most unpleasant thing. That is, remove Steam. At the same time, all installed games and applications will be deleted from the computer. But they will still remain in the account. It will be enough to download the client again and then log in with your username and password.

Have you often encountered the “” error right during a competitive game? Are you running out of patience because of receiving bans related to this particular error? Below we have compiled a small list of actions, following which you will definitely get rid of the error “ You cannot play on secure servers” and you can safely continue playing MM.

The VAC error most often occurs due to changes to game files and/or textures.

How to fix the error “Your computer is blocking the VAC system”?

1. Programs that conflict with the game.

List of programs that must be removed from your computer (or at least disabled while playing CS:GO):

• CCleaner
• Cheat Engine
• IObit Start Menu 8
• Process Hacker
• DLL Injectors
• Powershell

To remove a program, go to “My Computer” -> and at the top find the “Delete or change a program” button.

2. Restoring the “STEAM” service.

It is possible that the error may occur due to glitches in the STEAM program itself. To check STEAM for errors, do the following:

1. Quit STEAM;
2. Click “START” -> “Run”.
3. In the small window that opens, enter: “C:\\Program Files (x86)\\Steam\\bin\\SteamService.exe” /repair
4. After entering the command, scanning of STEAM files will begin.

NOTE: Verifying the files may take some time, so please be patient and just wait. If you installed STEAM in a different folder, replace C:\\Program Files (x86)\\Steam with your path.

3. Restoring the settings of the “Kernel Integrity Monitor”, “Kernel Debugger” and “Data Execution Prevention” systems.

These systems must be in a “standard” form. Let's try to return all the settings to default.

To restore all settings to default, you must:

1. Quit STEAM;
2. Click “START” -> “Run”.
3. Enter “ cmd” (without quotes). A black Administration console will open in front of us.
4. In this console, one by one, pressing the “Enter” button after entering each command, enter:

• bcdedit /deletevalue nointegritychecks
• bcdedit /deletevalue loadoptions
• bcdedit /debug off
• bcdedit /deletevaluenx

After entering all the commands, be sure to restart your computer.

4. Recovering damaged Windows files.

The “” problem can be caused by corrupted files on your system. Follow the instructions below to help you check your system for damaged files.

1. Close STEAM.
2. Click “Start” -> “Run”.
3. In the console, enter the command “ sfc /scannow” (without quotes) and press Enter:

When the file scan is finished, restart your computer.

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 so you found, say, a video on YouTube, did everything as it was said there, are glad and go back to the game. But not everything is so simple, through for a while it comes out again and then it starts to BOMB you. You have searched the entire Internet, but there is no answer 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

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

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

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

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:

Quit 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.

More and more games on Steam are starting to move towards multiplayer modes. Solo campaigns have long been replaced by exciting battles with your friends in different fictional universes. But the pleasure of playing online games is often disrupted by an error "Your computer is blocking the VAC system". Thousands of CS:GO and Dota 2 fans began to look for answers, what does it all mean? Why exactly can't I play? secure servers? It’s worth first understanding the principle of building online games.

Let's first understand the VAC system. VAC program is a special security system for the entire gaming platform based on Steam. It was created with one purpose - to put players in the same conditions. This means that anyone who tries to use cheats will be banned. The ban does not only apply to the game Dota2 or CS:GO, the entire user account. The end result is the appearance of a message - “Your computer is blocking the VAC system. You cannot play on secure servers".

You can immediately hear many objections from honest players. It is logical to think that this cannot happen with a fair game, but in reality it is not so. VAC responds to all installed utilities on the computer. If at least one program causes concern, then you should expect blocking. The fault may also be viruses. Their activities affect not only the PC, but also the work of Steam.

Reasons for account blocking?

The obvious answer is fair play. There is no need to look for ways to deceive the system for millions of dollars, on which the company’s best IT specialists worked Valve. In 90% of cases everything will be revealed. Show respect to other players and start thinking more with your head so that your battle statistics have a positive trend. Other reasons for a ban include:

1. Systematic shutdown games during battle;
2. Numerous complaints from other players;
3. Creation fixed matches between opposing teams;

Steam algorithms monitor all unnatural actions of players and immediately block the player.

Valve has officially informed players about the presence of such security measures. Therefore, in solving the blocking there are methods from both officials and ordinary players. Each method is effective in its own way.

1. To begin with restart your PC and router or network settings and try to start it.
2. Try running the Steam client from under administrator.
3. There may be a conflict with drivers - boot your PC via F8 and select the option to disable driver signature verification. We launch it, if it works, update the drivers.
4. Visit official page Steam- provides comprehensive information about the problem of blocking by the VAC system. Pay special attention to the list unwanted programs that need to be disabled while Steam is running.
5. Help Desk. Write to Steam Support from your account. Explain the situation in as much detail as possible. Tell us your sequence of actions before blocking VAC. Perhaps there were interruptions in the Internet and therefore exits from the game occurred frequently. The main thing is to show sincerity in communication.
6. If the error occurs while playing Dota 2 or CS:GO, try change servers.

Let's try it via the command line

1. Disable complex background programs to run alongside your operating system.
2. Restart your computer. First visit to check

Also here is a video review with entering a slightly different command via:

Solving VAC blocking in CS:GO and Dota 2 via “Run”

Bring up the “Run” menu using WIN (logo key) + R. Find the following file on your computer in the Steam folder: SteamService.exe. Copy the path to it. Paste into the called menu and add the command /repair. After a few minutes, check - everything will work.

I hope you understand what to do if your computer is blocked by the VAC system (when starting CS:GO or Dota 2) and at least one of our methods will be useful to you. Request Request unsubscribe in comments Which of the suggestions helped?

What to do if your computer blocks the VAC system in CS GO and other games? The answer is simple - try to fix it. Let's try it.

Solution 1: Solving the VAC blocking problem

Running the command line in Windows 7:

Click the button and in the bottom search bar start typing the word cmd

When the program shortcut appears at the top of the menu, right-click and select Run as Administrator.

Launching the command line Windows 8, 10:

Press the + key combination and select Command Prompt (Admin) from the pop-up menu

bcdedit /deletevalue nointegritychecks

bcdedit /deletevalue loadoptions

bcdedit /debug off

bcdedit /deletevaluenx

Something like this:

It is worth considering that when executing these commands, the system may produce errors (shown in red below) - THIS IS NORMAL.

This only means that the options that we are trying to remove are already missing, which is also not bad for us, in principle.

Now, you just need to restart your computer.

Solution 2: Incompatible programs

The Steam documentation contains a list of programs that may conflict with the platform. Here is a small list of them.

• Cheat Engine
• IObit Start Menu 8
• CCleaner
• Process Hacker
• DLL Injectors

You should get rid of them, or you can simply exclude them from the startup list. Paradoxical as it may seem, it is better to do this procedure using CCleanera itself.

Solution 3. Unofficial.

Based on the previous solution, we will do away with the official recommendations from Steam and move on to “folk art”.

On our two test computers on which vac was blocked, with Windows 7 and Windows 10 operating systems installed, none of the above methods worked. The third method helped, which we will share with you below.

The initial steps are the same as in the first solution, only instead of those four lines, you only need to enter one:

bcdedit.exe /set (current) nx OptIn

After that the games started working. Minecraft also worked, which produced the following error on a computer with Windows 10:

But after 40 minutes of play, he showed it again. Let's figure it out - we'll write.

neoshibka.ru

Your computer is blocking the VAC system - what to do?

"Steam" is the most widespread and well-known platform for purchasing and collecting computer games, as well as for the gameplay itself. Naturally, in this case, the administration is taking absolutely all measures to protect both the players themselves and the game servers. This is especially true for multiplayer games, where the concept of cheating is common. Gamers who are not able to defeat the enemy on their own enter special codes and install additional software in order to gain an unfair advantage over the enemy through dishonest means. Steam has a VAC system, which is an advanced anti-cheat that can track any signs of third-party interference in the game. If such activity is noticed, the user immediately receives a ban not only in the game, but also in his entire account. However, even if you are an honest gamer, you may experience certain problems with this system - for example, many users receive an error with the message: “Your computer is blocking the VAC system.” What to do in this case? There are several solutions, each of which you can try if the previous one did not work.

Restart and reboot

If your computer blocks the VAC system, then you will not be able to take part in all multiplayer games, as well as in those projects where this system is implemented by default. After all, your account will be impossible to track for the use of cheats, so you will not be allowed for security reasons. Therefore, you urgently need to solve this problem, and the first method, which is also the simplest, is to restart the computer. To begin with, you can simply try exiting Steam and then launching it again, but if this does not help, restart your computer. This may solve your small problem, if it is small, of course. But if your computer still blocks VAC after a reboot, then you need more drastic measures.

Third party software

There are various reasons why your computer is blocking the VAC system, and one of the most common is a conflict with the software running on your computer. In most cases, this could be an antivirus or firewall, but don't think that these are only security types of programs - other third-party software can also cause a similar error. Therefore, the best recommendation for you in this case would be to turn off Steam, disable all programs that you do not need while playing, and then try to log into the server again. There is a high probability that the problem will not bother you again. But if your computer still blocks the VAC (CS: GO) system, what should you do in this case?

Restoring the Steam service

The next way to solve the problem will look a little more complicated. It is suitable if your computer has any problems with the Steam service, which you can find in the platform folder (SteamService.exe file). And if your VAC is blocked by the system, then you should, according to tradition, turn off Steam and then call the Windows command line. There you need to specify the path to the file indicated above and use the /repair command on it. The process may take a few minutes, but once completed you will be able to play online again.

DEP

For those who are not well versed in computer technology, it is worth telling what this abbreviation means. DEP is a data execution prevention system that you need to activate to get rid of your VAC problem once and for all. To do this, you will again need to call the command line, but this time enter bcdedit /deletevalue nx there.

fb.ru

Your computer is blocking the VAC system - Articles and help

When playing on DotA 2 or CS:GO servers, you are not allowed into the server? This error does not tell us that the account is blocked, it only tells us that the steam application and all its processes are unable to use the computer’s RAM and virtual memory properly for normal operation.

Let's first understand the terminology and probable causes before offering hackneyed solutions from the Internet.

If VAC does not work, but the account is not clearly banned, the problem lies in the OS itself, the PC settings.

So what is VAC and how does it work?

VAC - Valve Anti-Cheat, this anti-cheat, developed by Valve, is a server protection module against cheats, it is distributed between game clients through a secure VAC server channel. That is, players do not need to download third-party software and install it in addition to the game. If a new VAC module appears, the servers automatically download the update and install it in the background. This is very convenient, since you don’t have to update with a key, or keep admins up to date with the latest patches. So VAC is the main licensed version of anti-cheat for your server.

During early testing in 2002, some materials about the program were made available to the public through the HLDS mailing list. The anti-cheat could detect OGC - OpenGL Hack, OpenGL-based cheats, as well as CD key spoofing. Information about identified scammers was sent to the blacklist server at IP address 205.158.143.67 with port 27013. There is also a Master Ban List server. Its port was later changed to 27011. System memory and hardware errors can throw a player out of the game, but do not prevent them from accessing the game. In this case, the VAC module is loaded into the memory of the user's PC and ensures that extraneous processes do not interfere with the game. In fact, any program that invades the address space of a running game process can be considered a cheat. The VAC system currently uses the UDP port range 26900-26999 for monitoring. To select a specific scanning port, specify the launch parameter in the application: steam.exe -steamport 26950 (for example). Therefore, the steam user's computer must have an appropriate range of ports open for incoming connections and not be blocked by antivirus software or all kinds of firewalls and system defenders.

Having detected outside interference that fits the definition of a cheat, the VAC module reports this to the central VAC servers at Valve. Detailed information about the type of intervention, account information, etc. is also sent there. When information about a violation is received on the VAC servers, a “cheater” flag is set in the record of the violating account in the central Steam database and a countdown starts (usually from a week to two months), after which the flag changes to “banned” and the account is denied access. access to any servers protected by VAC.

The following actions are not blocked by the VAC system:

• Using chat programs such as X-Fire.
• Hardware configuration.
• Updating system drivers, such as video card drivers.

As mentioned earlier, access to VAC-protected game servers is lost. The block is only applied to the game where cheating was detected, with some exceptions:

• If a cheat was detected in one of the games on the GoldSource engine (for example, Counter-Strike 1.6), then all games on the GoldSource engine (Counter-Strike 1.6, Team Fortress Classic, Half Life Deathmatch, Ricochet, etc.) are subject to blocking;
• If a cheat was detected in one of the following games: Counter-Strike: Source, Counter-Strike Global Offensive, Team Fortress 2, Day of Defeat: Source, Half-Life 2: Deathmatch, then the blocking applies to the entire list of these games

The best indicator that you are VAC blocked is that you receive the following message when you try to access a VAC-protected server:

"An attempt to join this server was rejected. Due to previous violations, you are prohibited from playing on all secure servers."

If you see a cheater on the server, no matter how openly he cheats, he will not suddenly be kicked out of the server with the message “VAC banned.” This mechanism is made so that cheaters cannot find out with any certainty whether a particular cheat is caught by VAC or not. Direct protection of the game from cheaters, as before, lies with the admins. VAC2 will never ban you for various kinds scripts, models, skins, etc. All this does not fall under the definition of “cheat” from the point of view of VAC. However, you can be banned for having programs that invade the memory of the hl2.exe/csgo.exe/dota.exe etc process. includes obvious cheats, various programs to “speed up Windows,” any programs that intercept information from video drivers, and so on. Be careful with the programs you install!

If you are banned by VAC2, your chances of being unbanned are zero. Valve has detailed information about why exactly you were banned, and you won’t be able to get unbanned through the support service.

• Don't use cheats (!!!)
• Use a clean, original Windows OS image.
• If possible, use a licensed version of the operating system or switch to Linux.
• Do not use suspicious operating system image builds or cracks to activate it that you know nothing about.
• If you use a firewall or antivirus, DEP, UAC, add games and the steam application itself to exceptions or disable them altogether. Open the appropriate ports, if they are closed, for steam and games to work correctly.
• Do not use software you know nothing about to “boost” and speed up your computer.
• Use only fresh and original drivers for the system and video card.
• Do not use Russian letters in the path to the steam application and games during installation.
• Do not forget to update the games and the steam application itself, if possible, run it as an administrator. After updates, restart the steam application before you start playing.

1) Exit the game, from Steam, close the running steam applications in the Task Manager 2) Go to the start menu => All programs => Accessories => Command Line (Right-click on the icon and select “Run as administrator”). On Win8, call the command line using Windows + X 3) In the command line, enter bcdedit.exe /nx deletevalue , press Enter 4) Reboot the computer 5) Try to play.

If the notification still pops up after 10 minutes of playing, then do this:

1) Exit the game, Steam and exactly the same as in point 1 of section 1 2) Call the command line using Windows + R 3) Enter this => "C:\Program Files (x86)\Steam\bin\SteamService.exe "/repair 4) Reboot the computer

fragrange.org

Your computer is blocking the VAC system:: Counter-Strike: Global Offensive General Discussions

Your computer is blocking the VAC system

Left the game. Clicked exit Steam. It says that CS GO is running (it wasn’t even hanging in the processes) and therefore it is impossible to exit Steam. Disabled all Steam processes. Launched the command line as administrator. Entered "bcdedit.exe /set (current) nx OptIn". The operation was successful. Rebooted. Launched Steam. I went into CS GO: again “Your computer is blocking the VAC system.” Then they gave me a block for 7 days. I waited. I went into CS GO. Started playing competitive mode. After about 5 minutes it throws it out and writes “Your computer is blocking the VAC system.” I repeat the above steps. Then again the competitive mode is blocked for 7 days. What should I do? Unfortunately, my conscience and laws do not allow me to describe the beauty of the situation. p.s. This isn't even the 10th time this has happened. Windows 10 64 bit.

Last edited by unknown; May 15, 2016 @ 4:10pm

Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts.

steamcommunity.com

VAC Authentication Error or Your computer is blocking the VAC system

Sometimes you play competitive mode in CS GO and at some point you get the error “Your computer is blocking the VAC system. You cannot play on protected servers” and you cannot reconnect to the server. As a result, you are banned for not being able to connect within a short time.

The answer is simpler than ever. The main thing is to do all the actions very quickly, so as not to be caught by a temporary ban in MM. For convenience, add this page to your favorites so as not to lose it. And so let's get started.

This is a simple way to get rid of this error.

If these manipulations did not help you, then clear the contents of the cache folder, which is located: Steam\steamapps\common\Counter-Strike Global Offensive\csgo\cache