• Dns server is working with. The firewall is blocking the connection. Common DNS errors

    Needless to say, many who like to use the Internet quite often encounter a situation in which, when trying to access some resource, the system displays a message stating that the DNS server is not responding. What to do in this case? As an example, consider the operating system Windows family. It is worth noting that most often such problems arise in this family of operating systems. Before we move on to correcting this situation, there are a few things to consider. theoretical issues. What is a DNS server and why is it needed?

    What is a DNS server?

    To put it simply and in clear language, then the DNS server is a means of convenient and correct redirection of requests from an IP address to a domain. It turns out that when visiting any page on the Internet, the user finds himself on the server not by entering some combination of numbers, but by entering the address in Latin characters. This is the main purpose of servers of this type. They are a kind of query interpreters. But what to do when the DNS server doesn't respond? What should I do? As a rule, the 8th and 10th versions of the operating Windows systems do not offer automated means to correct this situation. However, you can still try to do something.

    The DNS server is not responding: what to do?

    What could be the problem? First of all, you need to pay attention to the fact that the problem in which the DNS server does not respond may not depend on the settings of the user’s computer. If such a situation is observed, then it may be associated with problems that have arisen on the provider’s side. First you need to call your provider and clarify the situation. However, there are cases when users accidentally or unknowingly change connection parameters on their own. Also, some programs that require Internet access to work correctly can sometimes change their configuration randomly. The same applies to some types of malicious objects. You can try scanning antivirus program or even roll back the system to a previous state when everything was functioning normally. Practice shows that there is little hope for a positive effect in this case, although in some cases it works.

    DNS server does not respond: diagnostics using OS tools

    First of all, to check the functionality of the connection, you should pay attention to the built-in tools operating system Windows. There is a connection icon in the system tray. If you right-click on it, a menu will appear in which you can select the troubleshooting section. The “master” will perform a check in several steps, constantly checking to see if the problem has been resolved. Such a check, as a rule, does not bring results. For this reason, you need to act independently.

    Checking DNS Client Activity

    One of possible reasons for which the DNS server is not responding is a DNS client condition. We will need to check it. To do this, you need to go to the administration section by right-clicking on your computer. Also for direct access to the services section you can use the services.msc command. Here you need to find a component such as a DNS client. By right-clicking the mouse you can call up a menu with a properties line. Here you should pay attention to installed type launch. Must be set to automatic. If something else is set in the parameters, you just need to change it, and then reboot the system. To get to the properties of a service, you can simply double-click on its name.

    Alternative configuration

    Let's consider another option in which a situation arises when the DNS server does not respond. For example, the Rostelecom provider offers its own parameters and values ​​to configure access. However, most providers use a system for automatically assigning DNS server addresses, IP addresses and setting other parameters. For this reason, when entering the TCP/IPv4 protocol properties section, the user will not see any numbers there. If, however, it is provided manual settings, but the server does not respond, then you can use other parameters. So, for example, to use DNS Google servers you can enter the combination 8888 for your preferred DNS, and use 8844 as an alternative using the same input scheme. In most cases, a system reboot is not required for the settings to take effect. It is worth noting that in some cases it is necessary to disable the use of the IPv6 protocol. However, such situations are very rare. You can also try resetting the server. For this purpose, a restart and configuration update must be performed. After this, in the command line launched as an administrator, you should write four commands in sequence: ipconfig/flushdns; ipconfig/registerdns; ipconfig/release; ipconfig/renew.

    What other problems might arise?

    Basically, that's it for the DNS server not responding problem. It should already be clear what should be done to correct this situation. As for other possible causes of failures, this problem is mostly associated with social networks, which are simply blocked in offices for workers. Sometimes there are problems with modems. Usually just rebooting them is enough. Blocking access to sites with prohibited or questionable content can occur at the firewall or antivirus level. IN in this case you need to check the settings. You can bypass system protection by using even the simplest anonymous proxy servers. You may also need to reinstall the drivers for your network adapter. As you can see for yourself, there are quite a lot of options.

    DNS stands for Domain Name System, that is, “Domain Name System”. This is a system in which everything domain names servers are distributed according to a certain hierarchy. Let's figure out what DNS servers are for, how to configure them on Windows 7, what to do if the server does not respond, and how to fix possible errors.

    What is DNS and what is it for?

    The DNS server stores information about domains. What is this for? The fact is that the computer does not understand our letter designations. network resources. For example, yandex.ru. We call this the site address, but for a computer it is just a set of characters. But the computer perfectly understands IP addresses and how to access them. IP addresses are represented as four numbers of eight characters in binary system Reckoning. For example, 00100010.11110000.00100000.11111110. For convenience, binary IP addresses are written as identical decimal numbers (255.103.0.68).

    So, a computer, having an IP address, can immediately access a resource, but remembering four-digit addresses would be difficult. Therefore, special servers were invented that stored a corresponding symbolic designation for each resource IP address. So when you write a website address in search bar browser, the data is sent to the DNS server, which looks for matches with its database. DNS then sends the required IP address to the computer, and then the browser accesses the network resource directly.

    At DNS settings on a computer, the connection to the network will go through a DNS server, which allows you to protect your computer from viruses, install parental controls, ban certain websites and much more.

    How to find out if the DNS server is enabled on your computer

    You can find out whether the DNS server is enabled on your computer and its address through the “Control Panel”.

    1. Open “Control Panel” -> “Network and Internet” -> “View network status and tasks”. On the page, find the item “View active networks”, there find the name of your network connection, click on it, then on the “General” tab and on the “Properties” button.

      Open your connection window, then its properties

    2. A window will appear, in it there will be a list where you need to find the item “Internet Protocol version 4 (TCP/IPv4)”. Open the properties of this protocol.

      Open IPv4 properties

    3. In the properties, in the “General” tab, “Use DNS server” will be checked if connecting through a DNS server is enabled.

      The properties will indicate the IP address of the DNS server used

    4. The DNS server IP address will be listed below.

    How to install

    Video: setting up a DNS server

    Why do you need to change the DNS server?

    Of course, your provider also has its own DNS server; your connection is defined through this server by default. But standard servers are not always best choice: They may work very slowly or even not work at all. Very often, operator DNS servers cannot cope with the load and crash. Because of this, it is impossible to access the Internet.

    In addition, standard DNS servers only have the functions of determining IP addresses and converting them to symbolic ones, but they do not have any filtering functions. Third Party DNS Servers large companies(for example, Yandex.DNS) do not have these shortcomings. Their servers are always located in different places, and your connection goes through the nearest one. Thanks to this, page loading speed increases.

    They have a filtering function and implement a parental control function. If you have children, then this best option- sites that are questionable and not intended for children will become inaccessible to them.

    They have a built-in antivirus and a blacklist of sites. So, scam sites and sites containing malware will be blocked, and you won't be able to accidentally catch a virus.

    Third-party DNS servers allow you to bypass website blocking. It sounds a little absurd, because we said that DNS servers are designed to block unwanted resources. But the fact is that Internet providers are forced to deny access to sites banned by Roskomnadzor in their DNS servers. Independent DNS servers Goggle, Yandex and others are not required to do this at all, so various torrent trackers social media and other sites will be available for visiting.

    How to configure/change DNS

    Here you can configure the order in which DNS servers are accessed. For inexperienced users It is worth explaining that there is no one such server that would store all existing Internet addresses. There are too many websites now, so there are many DNS servers. And if the entered address is not found on one DNS server, the computer turns to the next one. So, in Windows you can configure the order in which you access DNS servers.

    DNS suffixes can be configured. If you don't know this, then you don't need these settings. DNS suffixes are a very difficult thing to understand and are more important to the providers themselves. In general terms, all URLs are divided into subdomains. For example, server.domain.com. So, com is the first-level domain, domain is the second, server is the third. In theory, domain.com and sever.domain.com are completely different resources, with different IP addresses and different content. However, server.domain.com is still located in the domain.com space, which, in turn, is located inside com. The DNS suffix when accessing the server is domain.com. Even though the IP addresses are different, the server can only be found through domain.com. In Windows, you can configure how suffixes are assigned, which has certain advantages for internal networks. As for the Internet, the creators of DNS servers have already configured everything necessary automatically.

    Possible errors and how to fix them

    What to do if the server is not responding or is not detected

    What should I do if, when I try to access a website, I receive the error “The computer settings are configured correctly, but the device or resource (DNS server) is not responding”? It is possible that the computer has turned off for some reason. DNS service. The DNS server you are using may have stopped working.

    1. First, go to “Control Panel” -> “System and Security” -> “Administration” -> “Services”. Find “DNS Client” in the list and double-click on it.

      Open DNS client properties

    2. In the window, look at the status of the DNS client, it should say “Running”. If the service is disabled, enable it: to do this, set the startup type to “Automatic”.

      Select "Automatic" from the drop-down list

    3. If the service is enabled, then the problem is on the DNS server side. Let's try changing the DNS server. To do this, open “Control Panel” -> “Network and Internet” -> “View network status and tasks”. Open the connection properties, then the “Internet Protocol Version 4 (TCP/IPv4)” properties. Click “Use DNS server” if this option is not checked, and enter the IP address of the DNS server. A list of public DNS servers can be found on the Internet. For example, you can enter 8.8.8.8 - Google public servers; or 77.88.8.1 - public DNS from Yandex.

      Try changing the default DNS server to a third-party one

    4. Usually the problem is solved this way. If it still doesn’t help, try 1) updating your network adapter drivers ( network card) - just download them from the official website of the adapter manufacturer, 2) check your Internet connection, there may be a problem with accessing it, 3) call your telecom operator, perhaps the problems are related to technical work.

    Doesn't resolve names correctly

    If the DNS server does not resolve names or resolves names incorrectly, there are two possible reasons:

    1. DNS is not configured correctly. If everything is configured correctly for you, then perhaps the error is in the DNS server itself. Change the DNS server, the problem should be solved.
    2. Technical problems on the telecom operator’s servers. The solution to the problem is the same: use a different DNS server.

    DHCP server: what is it and what are its features?

    The DHCP server automatically configures network settings. Such servers will help in home network, so as not to configure each connected computer separately. DHCP independently assigns network parameters to the connected device (including host IP address, gateway IP address, and DNS server).

    DHCP and DNS are different things. DNS simply processes the request as a symbolic address and transmits the corresponding IP address. DHCP is much more complex and smart system: It organizes devices on the network, independently distributing IP addresses and their order, creating a network ecosystem.

    So, we figured out that DNS servers are designed to transmit the IP address of the requested resource. Third-party DNS servers allow you to speed up the Internet (unlike the provider’s standard servers), protect your connection from viruses and scammers, and enable parental controls. Setting up a DNS server is not difficult at all, and most problems with it can be resolved by switching to a different DNS server.

    If you cannot connect to the network, then try running diagnostics on your device - Windows provides its users with this option. As a result, a window will appear with a list of errors, and one of the most common is called “DNS server is not responding.” If you have such an error, then the cause may be either a problem with the equipment on the provider’s side, or with your network devices that cannot recognize the address. Next, we will tell you in detail what can be done in this situation to restore the network!

    Method #1 Reboot devices

    If you are connecting via Wi-Fi, you need to reboot the router. Unplug the power supply from the outlet for 5-7 seconds. and insert again. If the network does not see the computer, reboot it too. If this did not help and the DNS server still does not respond, what to do about this problem, we will tell you below step by step:

    • On a PC, hold down +[R] at the same time and type cmd .
    • Write these commands one after the other:
    1. ipconfig /flushdns
    2. ipconfig /registerdns
    3. ipconfig /renew
    4. ipconfig /release

    This will help reset the router's cache and reboot it.

    Method #2 Changing DNS server settings in connection properties

    You need to make sure that these addresses are entered correctly. Here's what you can do when the DNS server is not responding and how to fix the error in Windows 7:

    • Click on the main menu button (Windows icon) and select control panel.
    • Go to "Network and Connections", find the section network connections.
    • In the window, select the active one (the one you are using) and right-click on it, select “Properties”.
    • In the window, find the “Protocol” sections (ip/v4 and ip/v6).
    • Indicate for each one in sequence "Receive... automatically". If this setting is already set, then enter Google addresses.
    1. 8.8.8.8
    2. 8.8.4.4
    • Click OK and reboot.

    If the DNS server does not respond in Windows 10, then here is what you can do:

    • Point to the network icon in the tray and right-click.
    • Open the center where networks are managed.

    Method #3 Router settings

    We figured out what “DNS server is not responding” is, but what can you do if your PC settings don’t help?

    • Open your browser and go to the modem management web interface. Most often this is the address 198.162.0.1, 198.162.1.1. For Huawei equipment 198.162.100.1. This information, login and password can be viewed at back side device body.
    • If the computer settings are configured correctly, but the DNS server does not respond, then you need to specify Google addresses directly for the router. In the interface, find the section related to network or Wi-Fi. In TP-link this is “Network” - “WAN”.
    • In the preferred and alternative address fields write 8.8.8.8 and 8.8.4.4
    • Now you need to save the new settings.

    Method #4 Start PC service

    In some cases, a device or resource displays the error “DNS server is not responding”; why exactly this happens, look in PC services:

    • Call the launch of +[R] directives again and enter services.msc.

    • In the list of services we need a corresponding client.
    • Call up the menu (RMB) and click on properties.
    • Install automatic start and if the “Run” button is active, click.
    • Save "Ok".

    Method #5 The problem is on the providers side

    Sometimes the fault lies with the service provider for lack of access, in which case you will need to call technical support. For example, here is what Rostelecom subscribers can do if the DNS server does not respond:

    1. Try setting the addresses to 48.193.36 (priority) and 213.158.0.6 (regional).
    2. Call 8 800 302 08 00 if the previous step did not help.

    Also, for example, many Beeline subscribers complain that the DNS server does not respond and the Internet does not work - in fact, the reasons lie in high load equipment. Just enter the Google addresses indicated above in the article, but if this does not help, then contact support at 8 800 700-06-11.

    If you see a DNS error while using your computer or the Internet, remember that there is a problem with the settings. If not solved this problem, the user will not be able to visit the desired website.

    What is DNS?

    For a domain, DNS will be the name of the service and will help in gaining access to resources on the Internet. The goal is to translate the address the user enters into the browser. Translation is carried out from the language used into the computer language. This procedure helps the computer read and understand the address to allow access to the site passing through the server.

    What is a DNS error?

    Error of this type for a particular website is mainly due to the lack of an active connection to the network. It also means that the equipment is not able to connect to the Internet to convert the entered address. For this reason, the computer is not able to visit the selected site.

    Errors occur for certain reasons, and most often they can be easily resolved. Sometimes the device shows them only for certain resources. In this case, the address may be entered incorrectly or there may be no record of it on the network.

    What should you pay attention to first?

    If the server is not found due to a DNS lookup error, there may be no problem with your computer. For this reason, you should pay attention to the recommendations presented and use them.

    • It is worth checking whether difficulties arise when trying to access one site or all. In the first case, the resource may undergo some changes or encounter operational problems. The user should wait or use the ipconfig /flushdns command as an administrator in a special line.
    • If possible, you should check: the DNS error appears on one device used or on others as well. If all devices are affected, then the problem may be with the provider. In this case, you should wait until the problem is resolved.
    • When connecting with using Wi-Fi The router must be completely turned off and restarted. The next time you try to access the site, the DNS server error will likely go away.
    • When connecting to the Internet without using a Wi-Fi router, it is recommended to go to the list of connections on your computer. Next you need to turn off the local network and turn it on again.

    It is worth understanding that after these manipulations the DNS error may remain. In such a situation, it is worth using other methods to correct it.

    Using Google Public DNS

    • You need to go to the list of device connections. The easy way To do this, press the Win+R key combination and enter the command ncpa.cpl.
    • It is worth choosing the connection used to access the Internet. He is high speed connection PPPoE, L2TP or local network. The required element is selected and the “Properties” item is clicked.
    • The TCP/IPv4 protocol is selected among the components used by the connection.
    • If the server is not found due to a DNS lookup error, it is important to check what settings are available in the DNS server settings. Upon receipt of an address in automatic mode It’s worth moving on to entering addresses. Then the values ​​8.8.8.8 and 8.8.4.4 are specified. Otherwise, you must first set it to receive automatically.
    • After saving the settings, you should run it as administrator command line and run ipconfig /flushdns.

    Troubleshooting browser problems

    Checking DNS connections is possible when using a different browser. To do this, download any web browser. On at the moment they exist large number, and they are mostly provided free of charge. After the browser is open, you need to connect to the Internet. If the service is not found again due to a DNS lookup error, then there are no errors in the browser. This means there is a problem with other computer settings.

    If there are no difficulties at all, the user should troubleshoot the old browser. Quite often they arise due to proxy settings. Accordingly, it is necessary to change them.

    Cleaning and changing DNS

    First of all, if a DNS error appears, you should clear the cache manually, since the setting becomes outdated over time. This can be done from the command line. This procedure is simple, but it may not be effective. If the error DNS connections will not be eliminated, it is worth changing the service.

    The user has the ability to independently enter an alternative DNS server to make a connection. To do this, go to the ncpa.cpl section and select the active connection, and then go to Properties. You need to find the TCP/IPv4 network protocol entry, which is located in the “Network” tab. Then properties and the option to go to the server address are selected. In the Preferred DNS server field, the user must enter 208.67.222.222. Then in the Alternate DNS server field you need to enter 208.67.220.220. Newly created DNS servers will be open source.

    Slow server response when using Google

    In this case, the error means that Googlebot is not able to contact him. This happens because it is not working or there is a problem with DNS routing for the user's domain. Most warnings and errors do not affect the functioning of the robot. Their occurrence can also be explained by a long reaction, which is an unpleasant moment for users.

    The first thing you should do is make sure that Google is crawling your site. To do this, you should use the tool for the main page of the resource. Google will have access to the site if the user returns the content without defects. The DNS service may be provided by your web hosting provider or another company. It is worth contacting it if the DNS probe finished or other error code appears.

    The server can be configured for a site using wildcards so that it starts responding to requests for subdomains. This approach will be successful if the content of the resource can be created by users, and at the same time for each personal page a separate domain is provided. It's worth noting that in some situations this can result in hosts with different names. In most cases, this prevents the resource from being crawled by Googlebot.

    Running for viruses

    The previously discussed methods may not help. If the DNS error still appears on the screen, and it is not caused by factors that affect the computer externally, then you should scan it for viruses. The user may already have an antivirus installed on their device. Recommended use Kaspersky program, and its free will do trial version. Bitdefender in a similar design would also be an excellent option.

    The level of detection and the ability to effectively eliminate viruses, while restoring system parameters, are quite high in these antiviruses than in their analogues. In this case it is worth using full check systems. Application this method can be really useful if you can't get rid of the problem in the browser itself.

    Antivirus malfunction

    It is worth paying attention to the fact that the antivirus itself in some cases can cause problems with connecting to the Internet. This can also be fixed. To carry out the procedure, “ Safe Mode" In this case, the computer will restart, during which only the files necessary for the operating system will be loaded. This will help determine whether the problem is caused by an antivirus or another program. To ensure this, it is recommended to do the following:

    • First of all, you should turn off your antivirus. If there are no connection errors, you should uninstall the antivirus and install a new one.
    • Next, you need to reboot the device. While loading it, hold down the F8 key.
    • You should select “Safe Mode with Networking” from the options provided.
    • The connection is then checked. If you successfully connect to the network, you can conclude that the problem lies in the program that is currently running on the computer.

    It is necessary to carefully study the startup files and disable programs until the faulty one is found.

    Router

    If the server is not found due to a DNS lookup error, it's worth looking at the router again. Rebooting it may not help in this case. In some situations, settings become damaged. The most correct and quick solution is to reset the device to default settings. As a result, the parameters will be reset wireless network. Along with them, the information transmitted through the port will disappear.

    To perform the procedure, you must press and hold Reset button, which is located on the back of the device. In this case, you may need a pointed object, such as a paper clip. Then you need to reconfigure the router. After resetting the device, you should change the wireless network settings, if used by the user. This will reset all accounts and administrator passwords. Making the settings is a simple procedure, but it requires care and correct actions. If the problem was in the router, then after the work done it should be completely resolved.

    Additionally, there is a possibility that the router is completely faulty. If you can't reset it and reinstall it, you should contact your Internet provider. In this case, it will be possible to determine the cause of the difficulty connecting to the network. In addition, the procedure will be performed by a specialist.

    The need to indicate the DNS of your hosting in the domain record

    A name server is designed to assist in finding information about a specific site. By completing a record in their domain, the user will provide the Internet audience with information in the right direction that will lead to the right place.

    If you leave the previous provider's data in the domain record, the user will be transferred to a server that no longer has the site. In this case, it will be impossible to access the site, since the provider has deleted the resource record from the DNS. Correct execution is quite important, and failure to follow recommendations can lead to difficulties.

    You should follow the steps described in the material if the server is not found due to a DNS error. The tips presented will be useful, because they help determine the cause of the problem and eliminate it in a timely manner. The information indicated above will become relevant for Internet users, since many of them are faced with the described difficulty. In addition, you can turn to specialists if you yourself cannot get rid of the problem that has arisen with gaining access to sites. This will be the most correct solution in this case.

    When working on a computer in a browser, an error may occur, the text of which is displayed as “ dns server doesn't answer." Most likely, all sites will stop opening and a yellow triangle will appear on the “Network” icon in the system tray. This situation occurs due to incorrect operation of the DNS server. What is it and why is normal operation of the DNS client necessary?

    The DNS server performs the functions of converting the site address, consisting of letters, to the IP address. If DNS servers did not exist, you would have to find and write digital addresses instead of easy-to-remember characters. The considered ways to fix a dns error are suitable for any modern Windows operating system: Windows 7, 8 or Windows 10.

    First of all, it is advisable to try next few simple ways to solve the problem or identifying the culprit of the error related to the DNS server:

    • When connecting to the Internet using a router or modem, the problem may be in the device itself (freeze or error in the firmware). Try simply power restarting the device. The model of the router, modem and their cost do not matter. Anyone can have similar problems.
    • Restart your computer, netbook, communicator or tablet. That is, the device in which the “DNS server is not responding” error occurs. Windows 8 or some other operating system has this problem - it doesn't matter.
    • If the Internet is distributed using a router, modem or any other access point, try connecting with another device and check whether the error disappears or not. This way, it will be possible to determine whether the problem is on the device side or something else.
    • Another simple option, when accessing the Internet using twisted pair cables, additional device(router, switch), you can try connecting network cable directly into the computer itself. Thus, it is excluded network device and if everything works, then there were problems in it.
    • Perhaps some settings were changed, something was downloaded or installed additional programs. Any of this could very well lead to the “DNS server not responding” error. What to do can immediately become clear if you remember the moment when it started.
    • You need to check whether the access problem only appears when you access one site or all of them at once. If the first option, then perhaps some work is being done on the site (changing the IP address, rebooting the web server) and you should just wait until everything works.
    • You can also make sure that the DNS client is working by trying to use any other browser. They are almost all absolutely free. Download, launch and try to visit some sites. If everything works in another browser, then the problem is in the program settings. Most often problems arise due to proxy settings.

    Clearing the DNS cache on Windows

    If the above methods did not help, you can try clearing the cache via the command line. To do this, you need to click the “Start” button and in the line where all programs are searched, write “cmd”. Then right-click at the top of the Start window and select “Run as administrator.” A new window will appear in which you need to write and sequentially execute (by pressing Enter) the following commands in the terminal:

    • ipconfig /flushdns
    • ipconfig /registerdns
    • ipconfig /release
    • ipconfig /renew

    After each command, press Enter.

    Using public DNS servers from Google

    It is likely that the whole issue is in the TCP/IP settings. If the Internet provider does not oblige you to indicate specific addresses, then you can register the addresses public DNS servers Google. You need to be careful when changing network parameters so that if something happens you can return everything to initial state. General principle going to these settings is similar to everyone Windows versions.

    To begin, in the system tray at the bottom right, right-click on network icon and click on “Network and Sharing Center” shared access" You can also open this window by clicking “Start” or the icon at the bottom left, “Control Panel”, in Windows 7 “Network and Internet” and then go to “Network and Sharing Center”. In the left menu there will be a link “Change adapter settings”.

    In the page that opens, select one network adapter, through which the computer has access to the Internet and go to Properties. Open the properties of the “Internet Protocol Version 4” section. In the window that opens, do not touch the setting related to the IP address (leave the current value), but with the DNS server select “Use the following DNS server addresses.” In the preferred and alternative DNS server fields we indicate 8.8.8.8 and 8.8.4.4, respectively.

    Checking the operation of the DNS client

    This problem may also be present due to problems (freezing, stopping) in operation DNS client services. You can open a window with a list of services from the Run program in Start or by going to Control Panel, System and Security, Administrative Tools, Services. Then we look for a service called “DNS client” and look at the status column. It should say “Working” or “In Progress”. The text itself may vary different versions Windows. The default startup type should be Automatic. For preventive maintenance, restart the service by clicking “Restart” in the left pane of the “Services” window.

    System Restore

    Some sites may also become unavailable due to the operation of some network utilities, programs or even viral activity, which could lead to problems with the operating system itself. In this case you need to scan your computer with an antivirus or use the System Restore program from the Start menu where you can easily find it. If the DNS server does not respond, Let's look at other options to fix this.

    The antivirus is not working correctly

    It should be noted that often the antivirus itself can interfere normal operation browser. This can happen when you specify incorrect settings after installation or as a result of any other errors in the operation of the program itself. The module itself that filters the network may have different names in different antiviruses: firewall, network defender or other. Try turning off your antivirus temporarily and check if the problem goes away. If everything works, then you need to restore the antivirus and then configure it, or disable the module that filters traffic.

    Speed ​​acceleration programs

    There are many programs on the Internet that offer to increase Internet speed through “smart” traffic distribution. For example, such programs may not load some advertisements or use their own own servers as a proxy server for traffic compression. A situation may arise that such a program will provide free access only for a certain trial period. Upon completion, Internet access will be blocked. To eliminate the possibility of blocking Internet access to user programs, You can try turning on your computer in safe mode(in this mode, only the most necessary programs will be loaded).

    To transfer the computer to this mode You must reboot and press the F8 key when you turn on the computer. When the list appears different modes, find the menu item “Safe Mode with Networking”. After downloading, check access. If everything works, then you need to reboot into normal mode and, one by one, disabling running programs, identify the one that blocks access to the Internet.

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