Why the DNS server is unavailable: how to solve the problem. DNS server does not respond: Rostelecom or another Internet operator


Modern Internet is nothing more than a multitude different computers, laptops and mobile devices interconnected into one network. Essentially, all these devices are servers. After all, each of them has an IP address, which is unique. It is thanks to IP that devices are identified in global network.

At the same time, the Internet requires two types of servers: main and auxiliary. The first one is used to host user sites. Depending on how much information is sent and received, a different number of sites can be stored on the server - from one (facebook.com, mail.ru, odnoklassniki.ru) to many thousands. The second type is represented by auxiliary servers, which help the main network operate, providing overall interaction. One type of such auxiliary devices is DNS servers.

What is a DNS server and what is it used for?

A DNS server is essentially a computer, but not quite. It serves to host a distributed database that is part of the Domain Name System (DNS), which is used to receive, transmit, and communicate to users information about domains of interest. DNS servers are connected to a network and interact with each other using a specific protocol.

A simpler description can be given. With the help of a DNS server, the correspondence of the site’s familiar name to its IP address is determined. This information is stored in a constantly updated database.

Let's look at the whole sequence in practice. The browser in which the user opens the site initially contacts the DNS server and notifies it that it wants to find and get to the site whose address is entered in the text field of the address bar. Go ahead. The DNS server determines from its database where in the network the site with that name is located, matching it to the server IP address with the resource located on it and sends a request there. As a result, a response is generated consisting of a set various files, making up the site itself (HTML documents, images and tables, CSS styles) and is sent to the user’s browser.

Where are the DNS server settings and how to find out its address in Windows 7

Let's consider a situation where a user on his computer is running Windows control 7 calmly “travels” on the Internet. This means that the DNS server is working. You can verify this by going through the “Administration” tab of the control panel in the “Services” menu and look at the status of the DNS client. The service must be enabled when selected automatic type launch.

In order to find out the DNS server address, you should use the ipconfig/all command by entering it in command line cmd.exe utility running as administrator.

How to install and configure: instructions

The DNS server is connected when configuring the network protocol.

Startup sequence:

  1. Select a network connection at the bottom of the desktop (right in the tray) by clicking on the corresponding icon, and in the pop-up window that opens, follow the link to the network connection management tab.
  2. Select a valid connection and in the window that opens, click the “Properties” button.
  3. Select the TCP/IPv4 Internet Protocol properties settings tab.
  4. Check radio buttons automatic receipt IP addresses and DNS server, click “OK” and close all open tabs.

It should be noted that such automatic configuration is only possible if the DHCP client service is enabled, which ensures the launch and operation of a DHCP server on the network. Its settings can be viewed and changed by selecting the appropriate item in open window system services"Administration" tab of the control panel.

At automatic configuration The provider's DNS servers are used. This is not always advisable, as difficulties may arise. For example, the provider’s servers are not always able to cope with the resulting load and do not perform filtering. In this case, it is preferable to connect through large, well-known companies.

Yandex DNS servers:

  • 88.8.8;
  • 88.8.1.

DNS Google servers:

  • 8.8.8;
  • 8.4.4.

OpenDNS DNS servers:

  • 67.222.222;
  • 67.220.220.

Depending on the selected company, a pair of addresses is entered in the Internet Protocol properties window in the fields of the preferred and alternative DNS server when the radio button for their use is checked.

Possible problems and ways to solve them

If you have problems accessing the Internet, then do not rush to get upset. It is quite possible that this happened due to violations DNS work-servers.

Main problems:

  • The Internet disappears and it is impossible to open a single site;
  • sites do not open in the browser, but the torrent client continues to work;
  • when trying to reboot network adapter the process freezes;
  • It is impossible to restart the DNS client, and an error is displayed.

It may happen that your provider has enabled blocking of some DNS servers, or the addresses specified in the network protocol settings have become unavailable. The solution to the problem is very simple. First, try changing the DNS server addresses, and if this doesn’t work, then turn on their automatic retrieval. If the problem is not solved, then you should look for another reason or contact a service center.

Video: What to do if DNS is not responding and how to fix other problems

DHCP server and its difference from DNS

The DHCP server belongs to auxiliary type servers containing network protocol, providing dynamic configuration of the node at the stage of automatic configuration of any network device connected to the Internet. The network administrator sets only the range of addresses. In this case there is no manual setting and, accordingly, the number of errors occurring is reduced. This happens because the server automatically distributes addresses between computers in accordance with the specified range. Most TCP/IP networks operate using the DHCP protocol.

Sometimes after rebooting the computer, or even for no obvious reason, instead of home page your favorite website displays the frightening message “DNS server address not found” (sometimes the message is even more succinct “DNS server error”).

And in this article we will look at why the dns server does not respond, and what to do when Windows OS cannot find the dns address of the server.

Cannot find server dns address: possible causes of the problem

Among the most common causes of DNS server errors are:

1. Engineering works on the site itself or on the side of the ISP that “hosts” the Internet resource.

2. Technical work on the side of your Internet provider.

3. Network settings on your computer have failed.

If a DNS server error “pops up” only on one site (and the rest of the web pages “load” without problems), then the problem is most likely on the side of this web resource and there is nothing you can do here: for sure, site administrators know about problems and will fix the problem as soon as possible.

If the DNS server is unavailable on several sites, then it is worth checking the loading of these resources from other computers/mobile devices: if the unfortunate error occurs on all PCs, then this is either a problem with the provider or a problem with your network device (for example, a router).

In this case, you should trust the complex network magic using auto-tuning and:

1. Turn off the power to the router, wait 30 seconds and turn on the router again.

2. Remove the network cable from the LAN port of the computer and reconnect the connector to the network card connector.

3. Restart your computer.

In most cases, after such “operations” Windows is able to find the dns address of the server, and your favorite sites work without problems.

If the browser still writes that the DNS server is not responding, then you will have to “uncover the heavy artillery.”

There are several other possible reasons for this error:

1. Viruses that automatically change network settings Windows 7 OS.

2. An unlucky wizard who manually set .

3. DNS settings that are lost after uninstalling any system/network programs or problems with automatic start DNS services.

How to fix the “DNS server unavailable” error?

1. DNS cache- this is a data storage on your computer in which the names and sites are recorded - this is necessary to speed up the connection with the right resource. Perhaps clearing the cache will help - to do this, press “Win” + “R”, run the command “ipconfig /flushdns” in the terminal and try to access the site again.

2. If updating the cache did not help, you will have to manually register the DNS servers - most likely, these are problems on the provider’s side. To do this, open the command line terminal again via “Win” + “R” and execute “ncpa.cpl” - the “menu” will open Network connections».

2.1. Select the one that is used to access the network -> Properties -> Internet Protocol Version 4 -> Properties.

2.2. If something is indicated in the “Primary” and “Alternative” servers, try checking the “Receive DNS data automatically” box, apply the changes and reboot.

2.3. If initially there was a checkbox for automatic retrieval, then in the “Preferred DNS server address” indicate “8.8.8.8”, and in the “Alternative” - “8.8.4.4”.

So, you specified Google servers Public DNS that work flawlessly. Apply the settings, restart your computer and try connecting to the desired site again.

If your computer can't find dns address servers when connecting through a router (and not directly) must be found in the tab with DNS servers, and indicate the same two addresses there. If there are more fields for addresses or other addresses are specified, do not be alarmed, just specify two addresses and save the settings.

3. If this does not help, perhaps the error appears due to a virus.

In this case, a full system scan with antivirus software, such as Dr.Web, Avira, Avast or Kaspersky, will help.

4. Check if the autostart of the DNS service works correctly. To do this, go to Control Panel -> Administration -> Services,

Find the DNS service in the list and check if “Automatic” is listed in the “Startup Type” column.

5. If after all the above measures the problem “cannot find the dns address of the server” is not resolved, you will need to reset the TCP/IP settings on the computer. Here you will find free utility from Microsoft and user instructions - https://support.microsoft.com/ru-ru/kb/299357

Today I have prepared an article for you that will help you solve one fairly common error that confuses even fairly advanced users: DNS server is not responding.

In this article, I will talk about the reasons for this error, as well as several ways to solve it. I will be waiting for confirmation from you in the comments what exactly helped you, as well as new options if anyone knows. Go!

1. What does “DNS server not responding” mean?

To proceed to troubleshooting, you need to understand what it means that the DNS server is not responding.

To understand the essence of the problem, you should know what a DNS server is. When contacting any virtual page on the network, the user gains access to a specific section of the remote server. This section contains and stores files that are converted by the browser used and presented to users in the form of a page with text, images and other information that is familiar to the visual perception of any user. Each server has an individual IP address, which is necessary to gain access. A DNS server is a functional means of comfortable and correct redirection of requests to a domain from a specific IP address.

Often the DNS server does not respond in Windows 7/10 when connected to the network via a modem and without using network cable, as well as for users who use another wireless method Internet connections. In some cases an error may occur after installing an antivirus.

Important! Often, users take personal interest and make changes to the modem settings, which lead to a loss of connection and an unwanted error. Therefore, it is not recommended to edit working settings unnecessarily.

2. Dns server does not respond - how to fix it?

If the user observes an error, then there are four ways to eliminate it:

. Very often it is enough to reboot the modem to fix the error. During the reboot process, the device returns to its original state. initial settings and parameters, which helps to quickly and effectively solve the problem;
  • Checking the correctness of entering addresses in the settings. To check the literacy and correct filling of the DNS address, you need to go to the properties tab “Connections by local network", there you need to find "Internet Protocol v4" and check specified address. The information that must be indicated in this field must be in the contractual connection documents. You can also find out the server address from your provider by contacting him by phone or other means;
  • Updating drivers for the network card. The problem can be solved by changing the provider and in some other situations;
  • Setting up antivirus and firewall. Modern programs, which are designed to protect data and information on your PC from viruses and fraudulent activities, can block access to the network. It is necessary to carefully review the settings of such programs.

    • To correct an error with a greater probability, it is necessary to consider specific situations in detail. This is what we will do below.

    2.1. On Windows

    There are several possible solutions problems listed in the table.

    Way Procedure
    It is recommended to disconnect the device from power or use the power off button, if provided in the configuration, and wait about 15 seconds. After the time has elapsed, you must turn on the device again.
    Using the Command Line You should call the command line from the PC administrator. To do this, click on “Start”, then find and click on “Search programs and files” and write cmd. After these steps, a program shortcut will appear. You should click on it right click computer mouse and select "Run as administrator".Then you should print and execute certain commands, after entering each command you must press the enter key:
    • ipconfig /flushdns
    • ipconfig /registerdns
    • ipconfig /release
    • ipconfig /renew
    Checking settings and options You need to visit the control panel and find “Network and Sharing Center...”. This subsection contains information about the network. You should select the connection you are using, then right-click the computer mouse and select “Properties”. A new window will open for the user, in which you need to select in turn:
    • Protocol (TCP/IPv6);
    • Protocol (TCP/IPv4).

    Then you need to click on “Properties”. You should check the boxes next to the items: obtain a DNS server and IP address automatically. When checking the settings, you must be very careful and take into account the information specified in the agreement with the provider, if any. This method only helps if there is no specific address specified by the provider.

    You can enter the addresses provided by Google, which, in your opinion, search engine, help speed up the loading of web pages: 8.8.8.8 or 8.8.4.4.

    3. DNS server does not respond: TP-link router

    Most modern users use routers and TP-link devices. Error DNS server is not responding can be eliminated in several ways:

    Attention! Some, especially inexpensive models TP-link parameters are lost. In this case, you should follow the setup instructions that come with the device and enter the data and DNS addresses specified in the contract and provided by the provider.

    It is better to set TP-link on the router basic settings, unless otherwise specified in the agreement with the provider.

    4. DNS server does not respond (Beeline or Rostelecom)

    All of the listed methods for eliminating the error are designed to assume that it is the user who has the problem. But practice shows that in most cases, problems arise with the provider for a number of reasons, such as technical faults.

    For this reason, if an error occurs, it is necessary not to rush, but to wait a while: during this period you can reboot the computer and router without touching any settings. If the situation has not changed, it is recommended to contact representatives of the provider company and tell about the current problem, providing the specialist with the data he requires: contract number, last name, IP address or other information. If the problem arose with the Internet connection service provider, he will report this and tell you the approximate time frame for eliminating the problem. This is especially true for Internet owners from the Rostelecom company (I myself am one of them, so I know what I’m talking about). Very useful numbers:

    • 8 800 302 08 00 - Rostelecom technical support for individuals;
    • 8 800 302 08 10 - Rostelecom technical support for legal entities.

    If the problem did not arise with the provider, then a company specialist can, in some cases, help the user solve it by giving competent advice or recommendations.

    There are situations when computer users are faced with the fact that their Internet does not work. One of the most common reasons why this happens is that the DNS server is not responding error occurs.

    Inexperienced people immediately panic, but this should not be done. The article will describe in detail this problem and suggest ways to solve it.

    To fix the problem, you need to learn more about the error that says the DNS server is not willing to respond. . First you need to understand what a DNS server is.

    This is a specially designed tool that redirects requests received from the client from a computer or laptop to the Internet domain of interest. When a user accesses any page located on the “global network,” he gains access to a specific remote server, or rather, to one of its sections containing the necessary data. For convenient viewing and scaling, they are converted into text format using the browser's built-in mechanisms.

    Any remote server, regardless of its subject matter or place of registration, corresponds to a specific IP address. When sending a request from a computer, the client addresses this address. Sometimes a situation arises when the browser does not display necessary information. This is the desired “DNS server is not responding”, and the error in question is displayed on the screen.

    Problems with the provider

    Most often, DNS server failure occurs because the error originated with the service provider.

    Inexperienced users should not panic and take rash actions that could aggravate the situation and lead to the formation of additional problems. The only correct solution is to find the support phone number indicated on the pages of the concluded agreement for the supply of Internet services and contact a specialist.

    After this, the wizard will ask you to provide the data necessary to determine the cause of problems with the DNS server:

    • first and last name of the subscriber;
    • number of the concluded agreement;
    • time of failure, etc.

    If the problem is technical and is on the side of the Internet service provider, the provider’s representative will report this and indicate an approximate time frame for correcting the situation. At all, technical specialists- competent people, they will give advice on what to do next in any situation.

    If the provider is “not to blame”, but the device or specific resource gives an error: “DNS server” is not responding , will be checked by a special service responsible for correct work DNS servers. It is not difficult to find it in all Microsoft operating systems. Windows 7 contains it in the Services section.

    1. To do this, after right-clicking on the “My Computer” shortcut, select the “Management” sub-item.
    2. The window that opens shows the “Services” section, click on it and find necessary for the user, having the word DNS in the name.
    3. Next, right-click to select the startup type “Automatic”.
    4. Then, for security, select the “Recovery” tab, where the service is set to restart if problems occur.
    5. Windows 10 contains a Services tab in the Task Manager.

    Ways to resolve the error

    There is a problem where you cannot contact remote server due to problems with DNS, it occurs either on one Internet resource, or when trying to simply connect to the “global network”. Many users are interested in how to quickly fix DNS error.

    The problem is being solved different ways, the main thing that is done to successfully correct the situation is to determine the reason why the DNS server on Windows experienced failures.

    The first way is when DNS fails , is to change the current DNS server settings. The easiest way to install servers is Google, the largest Internet company in the world. They are guaranteed to work; a situation in which DNS cannot be found is excluded.

    • Next, you need to go to the “Network Control Center”.
    • To do this, just click on “Start”, then find “Control Panel”, go there, select the desired item.
    • You can also right-click on wifi icon at the bottom right of the screen, select the desired item.
    • Determine the section where the adapter parameters are changed.
    • Find an existing Internet connection.
    • In its settings, the checkbox responsible for automatically obtaining DNS server addresses is removed. Fill in the blank fields with the addresses provided by Google: 8.8.8.8 and 8.8.4.4.


    Another way to fix DNS server error is to clear the cache. The easiest way to do this is through the command line.

    1. Opens by pressing two Windows keys and R.
    2. Then the field is filled with the cmd value and the OK button is pressed.
    3. Several commands are entered: ipconfig/flushdns, ipconfig/registerdns, ipconfig/release, ipconfig/renew.
    4. After this, restart your computer.

    Based on the results of these manipulations, there should be no problems with the DNS server.

    Antivirus blocked DNS

    In some cases, DNS failure is caused by the fact that the Anti-Virus installed on a laptop or computer blocks the ability to access DNS. This happens for several reasons. Sometimes a computer is infected with a virus that blocks the ability of DNS to work, but most often the antivirus software incorrectly configured. It can “not allow” access to a certain resource or even completely block DNS in operating system. The Anti-Virus is disabled for 10 minutes. At this time, you need to go to the browser and try to go to some site. If everything is successful, then you should look for an error in the settings of other security software parameters.

    Sometimes the reason is firewall. Moreover, it is blocked by the pre-installed firewall of the operating system or the one built into the Anti-Virus. To check, it is enough to temporarily disable it, similar to Anti-Virus. This is done in the “Control Panel” in the “Security” section.

    In some companies and organizations, firewalls, antiviruses and networks are configured system administrators in such a way as to prevent employees from visiting third-party sites. These include social media, torrent trackers and other types of entertainment Internet resources that distract from work. This is done, among other things, by blocking the DNS server. To solve the problem use portable programs for settings and anonymizers.

    Updating network card drivers

    The DNS server often does not work in Windows 10. This latest system, sometimes causing errors associated with the use of old drivers installed for the network card. Solve the problem simply by specialized applications like Driver Booster. It is enough to download it from the official website, install it according to the available prompts and run it. After this, the program will find problem areas, redirect the user to download drivers from the “global network”, and help install them.

    However it is not difficult to do in the usual ways, preinstalled in the operating system. To do this, open “Device Manager”, find “ Network card" Having found out the name, download required driver, and then click Update.

    The most common problems with DNS servers are problems that occur on the router. In order to determine that it is he who is “to blame,” a computer or laptop is connected directly to the cable installed in the apartment by the Internet service provider. If everything works, the DNS server is blocked by the router. The easiest way to solve problems caused by the router is to reset the settings to factory settings. Depending on the model and manufacturer, this is done in different ways. Sometimes it is enough to hold down the WPS/RESET button or insert something like a needle into a special hole. If desired, the router can be configured from the inside, for which you need to go to the address 192.168.1.1 and solve the problem in the administrator interface.

    When all else fails

    If none of the above methods corrected the situation, the DNS error is still displayed, there is nothing left to do but call a specialized specialist.

    The easiest way to do this is to contact the company with which the user has an agreement for the supply of Internet services. A technician will come from the provider, who will set up and fix any problems for a fee.

    When an error appears on your computer indicating that the DNS server is not responding, there is no reason to panic. There are many reasons leading to failure and solutions to fix it.

    Users usually start the troubleshooting process when they encounter a yellow exclamation point on the Internet icon. After the procedure, the system may display the message “DNS server is not responding.” What this means and how to deal with it, we will tell you in the article. The solution may be trivial (for example, rebooting the router or changing the browser), in some situations you will have to check the functionality of the DNS service or clear the cache.

    What does this error mean?

    Most people don't know what a DNS server is or what it's for. Each resource on the Internet has its own IP address, consisting of 4 bytes. But the user is not able to remember the numerical addresses of numerous sites, so they were invented domain names(names of sites you enter in address bar). The DNS server serves to associate a domain with an IP address, so that the user gets to the desired resource.

    Now that you know what DNS is, you can understand why your computer won't connect to the Internet. Typically, the DNS server is unavailable due to network problems. Problems with the provider may well be the cause of this error. But there may be situations when the source of the problem is your computer. In the following chapters, you will learn what to do if the DNS service is not responding.

    Primary actions

    If you encounter the DNS server is not responding message, do not panic, because the problem may not be the resource itself, but the device. Recommends doing a series of simple actions, which in most situations solve the problem:

    • Reboot your computer and router. Unplug the router and leave it turned off for a few minutes. Turn on your router and then boot up your computer.
    • Change your browser. If the error appears in your browser window, try a few alternatives.
    • Update network drivers. Outdated driver is common cause the error under discussion. Download the necessary software from the official website of your network card manufacturer.

    Contact the provider

    After the initial steps, contact your provider to find out why the server is not responding. The provider may require your full name, contract number, model of the router used or other information. If the problem is on the side of the service provider, you do not need to perform any manipulations. It is enough to wait for corrections. Otherwise, proceed to the subsequent paragraphs of the article.

    Checking the DNS client service

    The DNS client may be disabled on the computer. In this situation, all previous steps will be ineffective. The following instructions will help you check the client’s status and enable it:


    Now you know one of the reasons why the DNS server is not responding. Activating the client will clear the error so you can freely use the Internet.

    Changing addresses or settings of DNS servers

    Client activity does not guarantee full functionality. Wrong specified settings may restrict access to the global network. As a rule, the settings include the option to automatically obtain DNS addresses, but the router may give them incorrectly. You must set the addresses manually. Follow these steps to make the correct setup:

    You can also obtain DNS server addresses from your ISP. Now you know how to fix the DNS server not responding error.

    Clearing the DNS cache

    To speed up access to specific sites, the computer caches information about DNS servers. Information is located in system partition Windows. Often this cache is out of date and therefore leads to incorrect operation system, which becomes the cause of the already known error. The solution to the problem is simple - clear the cache. The procedure is performed using the command line or restarting the appropriate client.

    You can get to the command line in the following ways:

    • Windows 10: Right-click Start and then select Command Prompt (Admin).
    • Windows 7/8/8.1. Press Win + R, type cmd and press Enter.

    On the command line itself, enter the following commands in sequence:

    • ipconfig /flushDNS;
    • ipconfig /registerDNS;
    • ipconfig /release;
    • ipconfig /renew;
    • netsh winsock reset.

    After each of them, press Enter. The final step is to restart your computer. Clearing the cache will help solve connection problems when DNS is not responding. Alternative way– reboot the client. To do this, enter the list of services (described in detail in the DNS service check paragraph). By clicking on the required line right-click, click "Restart".

    If you encounter problems accessing websites, we recommend that you regularly clear your cache.

    Setting up a firewall

    Windows system has own funds to maintain safety. Their list includes “Windows Firewall” (or in other words, firewall). A firewall can block access to resources that it considers potentially dangerous to your computer. If you are confident in the reliability of the resources you are using, you can disable the firewall on your computer.

    Disabling occurs in a few clicks:


    Attention! On some systems, the firewall settings will be unavailable, as their powers will be taken over by the antivirus. In this situation, you will have to temporarily disable your antivirus to change the settings. Disabling FireWall in some cases removes the “no access to DNS server” message.

    Checking the system for viruses

    On Windows 10 and other OS versions, the “DNS server is not responding” message may be caused by malware. Viruses can completely block access to the network or to individual Internet resources. It is recommended to scan the system with an antivirus or using Live media (for example, a flash drive).

    VPN and other programs

    This will help solve the problem when the DNS server does not respond specialized software, which allows you to manually install a server from the list of available ones. Bright representative in this segment - DNS Jumper. The program does not require installation. The application can select a service automatically, but if necessary, the user can manually set the desired server.
    

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