What to do if it blocks all network connections. We solve the problem with blocking pages by Avast antivirus. Activate the reserved rule
There are viruses that are almost harmless and imperceptible, which for the time being (or rather, until a complete serious scan) cannot even be detected. But there are really dangerous ones. The latter can seriously affect both the operation of the computer as a whole and the performance of its individual functions. Such malware includes those that block access to the Internet or certain utilities.
It happens that an insidious virus blocks antivirus sites so that the user cannot seek help and eliminate the threat. It also causes the program to stop working at the same time. automatic update. In many cases even manual update The antivirus program does not work. At the same time, you can access other sites without difficulty, as before.
What to do if a virus blocks sites? The solution to the problem will be to “cure” the computer from this. Due to the specific nature of the virus, this task is greatly complicated. The database of the installed anti-virus program may simply not contain information about this pest, and it is unlikely that it will be possible to update it in the usual way. Just as it won’t work to download another one from the Internet.
The virus blocks antivirus sites: what is the danger?
The problem is that by the time the user comes to his senses and discovers problems, the virus has already managed to make negative changes in the system. It even happens that the malicious program has already been eliminated, but its effect has not stopped. After all, the changes she made to the system have not been undone. Therefore, all restrictions on sites continue to apply until the computer owner returns the settings to their original state.
How does a virus block search engine sites?
The most common reason why a virus blocks websites is changes in the hosts file. It is responsible for mapping hostnames to IP addresses. Every time you administer search query the computer accesses this file. And based on the information specified in it, it connects or does not connect to the specified site. Thus, hosts file- this is a kind of Achilles heel. Any changes to such a file are fraught with problems and lost connections. That is why he is targeted by an insidious virus that blocks sites.
The main purpose of such intervention, of course, is to make it difficult to rid the computer of malware. This is very common behavior. The recording used by the virus to block sites may look different. For example, like 388.113.44.1 yandex.ru for Yandex search engines. This is enough to prevent the computer from connecting to the site: it will mistakenly access the specified incorrect address.
Solving problems manually
In order to correct the consequences of malicious interference, as well as to prevent it, you can use several tricks. First you need to find the hosts file. It is in the system Windows folder, full path which usually looks like C:\WINDOWS\system32\drivers\etc. The last folder contains the file you are looking for, whose properties should be changed slightly. By clicking on it right click mouse, you need to open the corresponding item and cancel the “Read Only” attribute in it. In some cases, there is no checkmark, then you can move on to the next step.
After the changes have been made, the file must be opened in Notepad or a similar program. The simplest and universal option will delete all entries except one: 127.0.0.1 localhost. You can also view the contents of the file more closely and delete only records about the addresses of those sites that are blocked. It is important not to forget to save the changes made and return the file to Read-Only attribute, otherwise your efforts will be in vain.
Unfortunately, this option does not always work. If the above steps do not have any effect, it is recommended to try the AVZ program. This utility is designed specifically to search for and eliminate such viruses and the consequences of their presence on the computer. Having launched it, you need to select the “File” item, and in it - “System Restore”. The items that need to be marked are 21, 20, 15, 14 and 13, as well as 9, 8 and 6. After a few minutes, the utility will complete its task.
After completing AVC work, it is strictly not recommended to immediately connect to the Internet. One more operation needs to be done first. IN command line(“Run”) enter cmd. This will bring up a console in which you need to write the command ipconfig /flushdns. Pressing the enter button starts the cache clearing process. But that's not all. The last step is to run the route -f command. After this, you can safely restart your computer and access the Internet.
The firewall is, although useful, a standard program. But to a greater extent, only Microsoft developers think so! I won’t argue, in a small way it helps to protect the computer a little from unwanted launches of various kinds of programs that carry some kind of danger. But it does much more harm than good. And if you came to this page, you probably verified this for yourself.
The main task of a firewall is to protect your computer from unwanted launches of additional software, which we noted earlier. But everything would be fine if it didn’t block the necessary software, and especially the Internet! Yes, yes, you heard right! And such problems happen quite often.
Internet problem solution
Solving the problem that causes your network connection to be blocked is quite easy, but you will have to spend some precious time and effort by following these steps:
Treat this stage with understanding. An antivirus is necessary on a computer no matter what. Since there is a lot of unsafe material on the Internet. Antivirus will also replace firewall in the future.
- Disable the firewall;
After installing the antivirus, you should disable the firewall. In this case, its necessity is canceled. For the reason, alternative protection.
- Stopping firewall-related services;
The fact is that when the standard defender stops working operating system, its services are not always disabled. And in exactly the same mode they continue to fulfill their purpose. Which leads to a recurrence of the problem. Therefore, be sure to open the services and double-check whether the defender services are enabled. If there are, deactivate them.
This is the final stage for every serious procedure related to computer software. Don't ignore this step! Make sure to restart your computer.
We did all the above but nothing helped. And the problem repeats itself again and again! The possibility of such software behavior cannot be ruled out. Moreover, if it is pirated, some kind of clumsy assembly, then in most cases it will be so! You can get out of this situation in the following ways:
- Add a connection to the exclusion list;
Not always, but sometimes it helps to resolve this issue by adding your connection to the exclusion list. That being said, after you do this, turn Windows Defender on and off immediately.
One of the surest ways out of any situation is to use licensed software. The fact is that the original OS works much more stable, lasts longer and does not have as many bugs as pirated OSs. In addition, you can use new updates with peace of mind without fear that your system will crash.
- Search and remove potentially unwanted software.
And the final way to fix Internet connection blocking is to search and potentially delete unwanted programs. It seems like there is no connection between additional software and the network, but that was not the case. Virus software often works in hidden mode, that is, without the user seeing it. During this time, malicious files may be downloading. As a result, the OS defender reacts and bans the Internet.
On the Internet you can pick up many dangerous viruses that harm the system and files, and antiviruses, in turn, actively protect the OS from such attacks. It is clear that an antivirus may not always be right, because its tools end at searching for signatures and heuristic analysis. And when your protection begins to block and delete a downloaded file that you are sure of, you should resort to disabling the antivirus program and/or adding the file to whitelist. Each application is different, so the settings for each are different.
The protection provided by modern antiviruses against malware is quite high, but they can all make mistakes and block harmless objects. If the user is sure that everything is safe, he can resort to some measures.
Kaspersky Anti-Virus
Avira
Dr.Web
Avast
McAfee
Microsoft Security Essentials
360 Total Security
Antivirus add-ons
Many antivirus programs, along with other protection components, install their own browser add-ons, with the user's permission. These plugins are designed to notify the user about dangerous sites and files; some may even block access to suspected threats.
Hello dear readers of the blog site I decided to write a short article in which I will try to talk in detail about what to do if an antivirus is blocking the Internet. Very often in my work I came across a situation when a client, after installing an antivirus, complained about an Internet outage and started calling technical support provider asking why the Internet was lost.
After a remote scan, the reason associated with the blocking by the antivirus program is usually not identified and a specialist visit is required to fix the problem. As you understand, the visit of the master is paid, and who wants to pay extra money and waste their own time if everything can be done independently.
Before calling technical support, be sure to check all the settings and check the installation instructions to see if you did everything correctly. If you are connecting via , Then also first check whether access to the network is blocked on any other device (tablet, phone, laptop).
I want to say right away that you won’t have to delete anything; everything can be solved quite simply by changing the settings of the computer and the antivirus itself. If you have uninstalled the security program and don’t know, then I advise you to read the article on this topic.
So, let's look at several options for solving the problem associated with network blocking by an antivirus.
Disabling the antivirus filter that blocks the Internet
After installing the security program, an additional parameter “Network Filter” is automatically added to the properties of your network connection. , which, if configured incorrectly, turns off the Internet. To remove such a filter, you need to go to the Network Control Center and shared access and in the left column select “Change adapter settings” .
You will be redirected to the section “ Network connections» , where we will continue to make further changes. On the shortcut of the connection through which we access the Internet, right-click and select “Properties” from the menu that opens ».
After the completed operations, the connection properties window will open, where you will need to uncheck the box next to the filtering component, which is what blocks the network.
Then click OK and for the new settings to take full effect, reboot the computer. Most often, this method helps to remove the blocking of access to the Internet associated with the operation of the antivirus. But a situation happens when this method does not help and you need to go into the security program settings and unblock connections manually.
Now I will try to briefly talk about what settings need to be changed in the antivirus program. As an example, I chose the most popular Kaspersky antivirus.
If the Internet turns off after installation, then just change some parameters. The first thing you need to do is go to Kaspersky settings. To do this, right-click on the antivirus icon in the lower right corner of the monitor and select “Settings” ».
A window will appear in front of you in which you need to select a tab Settings and In the “Workplace Control” item, select the “Web Control” component ». If your network is blocked, then first uncheck the box next to “Turn off Web Control” and check if the connection is working. If everything is fine, you can try deleting access rules and re-enabling Web Control. In my opinion, this parameter is not particularly important when working on the Internet and can be safely disabled, as it was done on my computer.
Actually, this is where I would like to end my story about what to do if an antivirus blocks access to the Internet. There are many antiviruses that can disable the Internet connection, and if I talk about the settings of each of them, I simply won’t have enough time and nerves. I hope that after reading the article there are no questions left, but if there are any, then feel free to leave them in the comments.
In our age of new technologies, an antivirus for a computer can be compared to a virus vaccination for a person. If your antivirus works poorly, then most likely your PC will not live long. But it also happens that after installing an antivirus you cannot access the Internet. This situation often occurs in Avast antivirus.
Avast blocks the Internet
Users may have encountered a situation where Avast blocks Internet access. It does not allow you to open any page in any browser. Avast antivirus blocks everything network connections.
This situation can be caused by many reasons. Therefore, the problem will have to be solved accordingly to each of them.
Important! Most often, blocking occurs on a PC with Windows XP.
We are looking for a way out of the situation
You can do what most users do and just with. You can say goodbye to Avast at any time, so let's first figure out how to solve the problem and leave the antivirus (read about removing Avast antivirus).
First of all, you need to understand two things - why Avast blocks all sites and why Avast blocks the Internet. If the program blocks only one site, then perhaps it really is infected with a virus (you can read how to add a site to Avast exceptions).
But if, when you launch all browsers, a notification appears about blocking malicious screens, then you should act differently:
After you do everything according to the instructions, the problem with connecting to the Internet will be resolved. Now you can solve the problem yourself: “Why is Avast blocking the browser?”
It happens differently
In cases where even these steps did not help fix the problem, the conclusion arises that your computer has caught a virus. In this case, it is better to show it to a specialist and not worry about how to correct the situation. Why? Because if you are not an expert, you can do even worse (for example, delete important system files). Therefore, do not immediately believe everything you find on the global network.
Be attentive to alerts on your computer screen and listen to advice.
I hope you found this information helpful. Good luck everyone!