If you have opened a website and, instead of the usual page content, you see error 105, which says “cannot convert the server’s DNS address,” it means that some kind of unexpected/planned system failure occurred on the side of the provider or the site owner.

The problem may also arise for you. We will look into the situation.

Often this happens after installing a program or after uninstalling antivirus software.

Preliminary measures

To avoid searching in vain for a non-existent problem on your computer, take a series of preventive actions that will show you what needs to be done.

First, check whether “cannot resolve server dns address” appears when logging into one resource or all of them.

If one site is to blame, it means that the provider has some problems or the owners of the resource are changing the equipment settings.

In this case, you can try clearing the DNS cache via the command line.

Go to Start, search for “run”, and then type the CMD command (in capital letters).

As suitable software, you can use any modern antivirus that is updated to the latest version. Or use one of these options:

1. Bitdefender;
2. Kaspersky;
3. Panda.

These programs have the highest chance that after cleaning, all damaged system parameters will be returned to their original values.

In other words, the DNS problem will be resolved automatically without your intervention.

Some cases may require more complex interventions, but in the vast majority of cases, this simple set of techniques that were described in the article will help you regain access to the full content of Internet pages.

Important! In some cases, if the DNS server on your PC was registered manually, you will need to call the provider that provides the Internet access service. You can also consult with him regarding interruptions in the global network.

If your “favorite” site is not working, and you see the message “ERR_NAME_NOT_RESOLVED”, then use the same Internet to find out exactly why the required resource is in a state of technical work.

In most cases, the information you are looking for can be obtained on social networks, forums and websites dedicated to covering such problems.

WHAT TO DO IF You can’t find the DNS server address and the page won’t load

Cannot convert server DNS address: quick solution to the problem

Not often, of course, but sometimes users, when trying to access Internet sites, are faced with the fact that the browser installed on the system displays a message stating that the DNS server is not responding. Not every user knows what to do to fix the problem, but there are several simple solutions, which will be discussed further.

Why are DNS servers needed?

First, a little theory. In essence, it is a kind of interpreter that makes it possible to convert numeric addresses of Internet resources into letter designations of domain names.

This saves the user from the complex procedure of remembering and entering the resource address in numerical terms. It's too inconvenient. Many people know that today an address is entered in a line, consisting of letters, numbers and other symbols with an addition in the form of a domain, which looks much simpler in practice.

Possible performance problems

Now let's look at some problems when for some reason the DNS server does not respond. What to do to troubleshoot problems will become clear if you look at the causes of failures.

As a rule, among all the things that can cause failures are problems on the part of the provider, incorrectly set TCP/IP parameters, exposure to viruses, spontaneous changes in parameters by specific software, etc.

DNS server does not respond: what to do (Windows 7)?

The first thing to do when such problems occur is to check the activity of the DNS client. To do this, use the services section, which can be accessed by entering the services.msc command in the Run menu (Win + R).

Here you need to find the line indicating the DNS client and look at the startup type used. The value should be set to automatic. If something else is set, the parameter will have to be changed by right-clicking the menu where the properties line is selected.

But this is not all that can correct the situation if the DNS server does not respond. What to do when a corresponding message appears? You need to check that the TCP/IPv4 parameters are correct (this protocol is the most commonly used). To do this, you will need to enter the network properties section from the network management section. Then open the window for changing adapter properties, specify the desired connection and use the connection properties, where you need to find the appropriate protocol.

When calling its properties, you should look at the set parameters. In most cases, the provider provides automatic value assignment services, but sometimes they need to be entered manually. In the Preferred and Alternate DNS server lines, you simply enter the correct values ​​and save the configuration changes.

The DNS server is not responding: what should I do? Rostelecom

However, even after this the problem may not disappear. In particular, this applies to the Rostelecom provider, which provides its own parameters for configuration. But they may not work, and the system will again issue a warning that the DNS server is not responding. What to do in this case? Use a different (alternative) configuration.

For example, you can rearrange access by specifying the DNS servers of Google services. To do this, in the properties of the above protocol in the server value lines, you need to enter the following parameters: for the preferred one - two digits 8 and two digits 4, for the alternative one - four digits 8. There is nothing wrong with swapping the values ​​for the alternative and preferred server.

Finally, if this option does not work, you can do a complete reset and update the configuration. To do this, use a command line launched at the administrator level, in which the command ipconfig /flushdns is first written, then ipconfig /registerdns, then ipconfig /release, and finally ipconfig /renew. After entering each line, press the Enter key.

Conclusion

It remains to add that at least one of the above solutions will eliminate problems with However, issues related to virus exposure or the fact that some types of software that require constant access to the network can spontaneously change the configuration (for example, when constantly checking licenses) were not considered here. . Here you will have to use completely different methods.

DNS (Domain Name System) is a domain name system that is presented on servers in the form of a certain hierarchy. When working on the network, you can encounter errors in the operation of domains, which is why changing the server used will save you. In Windows 7, it is possible to configure the DNS server and change its parameters, which is done very simply, in just a couple of steps.

Purpose of DNS

Computing devices do not understand our language, as well as the address that we enter into the search bar of the browser we use. The computer only understands IP - the code designation of the client (user). Such information is provided to the server in the form of a binary number system, for example, 00100010.11110000.00100000.11111110. This set of numbers is automatically converted to the decimal system, for our understanding. In this case with the example above, it would be 255.103.0.68.

For clients, remembering even such a set is extremely difficult. Therefore, when registering a domain on the appropriate resources, we come up with some kind of letter designation.

After registering a domain, we receive both an alphabetic expression of the future site and a numerical one, presented in the form of a binary or decimal number system.

When a user sends a request to the server (indicates the address in the search bar), it goes to the DNS server - where the site domain is stored. The system automatically searches for matches, and if everything is fine, then we get to the site.

All computer requests are made using DNS

Among other things, this address ensures the user’s security while surfing the Internet. In this way, we protect ourselves from various types of malicious software. If this parameter is disabled on the computer, the client will not be able to access this or that resource on the network.

When should you change your DNS address and where to get it?

By default, the option to automatically obtain a DNS address is enabled on your computer. This setting is optimal for most users. Only in exceptional situations should it be changed. For example, when you need to access a certain resource on which you have been blocked.

Some servers may be located quite far from the hosting. This has a direct impact on the loading speed of website pages. It is recommended to use free addresses, which you can easily obtain from many search engines. For many users, this will be the best way out of this situation. Ideal: Yandex.DNS or Google Public DNS. In this case, the connection will be made through the nearest server.

Yandex.DNS or Google Public DNS services are free to use and very reliable

It is most advisable to change the DNS address for owners of their own resources. When a user sets this information in the site domain, he automatically “tells” the entire global Internet community about the location of the resource so that it can be found, opened and the information stored there can be read.

Changing DNS will allow you to access blocked sites.

The same addresses from Yandex and Google are not bound by any obligations with Roskomnadzor, unlike Internet providers who provide you with the opportunity to operate the network.

How to find out DNS and where it is located

As with most system settings, you can find DNS server information through the Control Panel.

Open the Start menu and select Control Panel.

Open Control Panel from the Start menu

In the window that appears, open the “Network and Internet” tab and click on “View network status and tasks.” Here you will find the “View active networks” section. It will contain all the networks to which your computer is connected. Click on the one that is responsible for connecting to the Internet.

Select the active network that is responsible for connecting to the Internet

Now go to the properties of the selected network. Click on "Properties"

Once clicked, a window with many options will appear. You need "Internet Protocol Version 4 (TCP/IPv4)". Select it with your mouse and open Properties. Highlight “Internet Protocol Version 4 (TCP/IPv4)” and click on “Properties”

The window that opens will contain all the information you are interested in. By default, automatic retrieval of the server address should be enabled.
Automatically obtaining an IP address is optimal for advanced users

In order to set a new address, you should repeat the manipulations mentioned above (go to the properties “Internet Protocol version 4 (TCP/IPv4)”).

You need to change the checkbox from “Obtain DNS server address automatically” to “Use the following DNS server addresses” and enter the desired address.

Check "Use the following DNS server addresses" and set the DNS address you need

Such options should be changed with extreme caution and care. Analyze DNS servers in advance and avoid using little-known ones.

Video: installing a DNS server

DNS Settings

Setting up and changing an address is carried out in the same way as obtaining information about it. First, you again need to go to the “Internet Protocol Version 4 (TCP/IPv4)” properties. You can configure and change the DNS server in the “Advanced...” tab.

In the “Advanced” tab, you can independently change the order in which the client accesses the servers

You should know that all sites and domains are stored on different servers, and there are a huge number of them. Thus, if you specify a specific address, and it is not on one server, the machine automatically switches to another, and so on, until the desired result is found.

You can configure DNS suffixes, but unless necessary, it is better not to change anything in this setting

DNS suffixes are needed exclusively by network providers to provide various levels of access, since the address of any site can be divided into several parts.

Domain levels are counted from the end, for example, in the address server.domain.com there are three levels and server is the third.

There is no need to configure anything here, since everything should already be done for you. You run the risk that you will completely lose access to most sites and will have to set everything up again.

DNS server not responding: how to fix problems in Windows 7

This is one of the most popular problems that users may encounter while surfing the Internet. By the way, it is not the most pleasant, since there can be many reasons for its appearance. Such problems can be solved in several ways.

First of all, you need to check whether the corresponding service is activated on your personal computer.

Open Control Panel and go to System and Security.

In the Administration option, select Services.

In the list presented, find the “DNS client” entry and double-click on it with the left mouse button.

In the window that appears, change the service startup type to “Automatic”.

If the automatic startup type has already been set, then the problem is not with your computer, but is on the side of the server you are using. You can get rid of the problem by changing the address, as described above.

It is best to use search engine addresses: the address from Google is 8.8.8.8, and from Yandex - 77.88.8.1.

One of the options described should definitely help. If this still does not happen, update the network adapter drivers and check the cable connection to the computer. If this doesn't help, call your Internet provider.

If the error appears to be incorrect DNS name resolution, you will also need to change the address.

What is a DHCP server and how does it differ from DNS

DNS is part of DHCP, which is a much more advanced system. DHCP deals with the organization of the network used, the distribution of IP addresses and the creation of the network ecosystem. It contains a wide variety of information that it processes and exploits in the future: host IP address, gateway IP address and information about the DNS server. All these parameters are configured by the system automatically, and changing them is highly not recommended.

DNS are designed to transmit IP addresses, obtain data about resources and connect to them. If necessary, any user can change the address to speed up the network, protect their computer from unwanted consequences and optimize the operation of sites in general. All this is possible by changing the domain server.

Internet users sometimes encounter situations where they are unable to access the network. The error “DNS server is not responding” often occurs. Difficulties will not arise if you know the causes of the problem and how to solve them.

What is the error and why does it occur?

Each Internet resource has its own IP address, from which the DNS server redirects requests to the domain. If access to the servers is closed, then when you try to go online, a window with the error “DNS server is not responding” appears, and on the taskbar you can see yellow triangle with an exclamation point inside.

Solution methods

If there is no debt to the provider and the equipment is operational, then the malfunction can be eliminated in several ways. But first you need to find out the cause of the problem.

Checking the DNS client service

In the Windows 7, 8, 10 operating system, there is a special service that is responsible for the correct operation of the DNS server. First, check it out:

Checking connection properties

If, after setting up the service, Internet access does not appear and the DNS error does not disappear, then check the connection properties and, if necessary, change the settings:

Clearing the DNS cache

There is another way to configure the server - clearing the cache. Usually, they use the command line for this, which can be called up by simultaneously pressing the Win and R keys. After which:

Checking for viruses

Sometimes the antivirus blocks access to the Internet. This problem may be caused by a virus, in which case scan the system for the presence of malware. But there are situations when the antivirus itself, due to incorrect settings, does not allow access to some sites or even completely blocks the server. To check this possibility, disable your security software for a few minutes and go online. If it works, then you need to look for the problem in the settings of your antivirus program.

Firewall is blocking the connection

A firewall serves to protect your computer by closing sites and resources that it considers harmful. Due to incorrect settings, it can also block DNS servers. Disable it for a while to check if this is the cause. The built-in firewall can be turned off by going to control Panel. Choose " Windows and security", then " WindowsFirewall" Convert all values ​​to " DisableFirewall» and click OK.

Problems with network card drivers

For correct operation, all connected devices must be installed drivers with the latest updates. Due to outdated network card drivers, network access is also limited. To update them, you can use special utilities, for example, Driver Booster. Just download it and run it. The program will find the necessary drivers and direct you to links with updates.

Computer or router errors

May I help reset computer (PC) and router. First, disconnect the router from the network and leave it for a few minutes. Then restart your PC and turn on the router again.

Problems with the provider

If none of the methods helped fix the error “DNS server or resource is not responding,” then it is better to contact provider's technical service. The connection problem is probably due to an Internet outage. Specialists should help solve the problem.

Using DNS Jumper

To resolve the “DNS server is not responding” error, you can also use a special program for setting up DNS Jumper. It doesn't require installation. By launching the utility it is possible enter the server manually or let the program choose it itself. She will choose the fastest and a normally working server. Addition DOTVPN It also allows you to select the country from which you can access the network.

Possible problems with the TP-Link router

Users very often use TP-Link routers. But some devices periodically settings are lost. Therefore, the access error can be resolved by resetting the router to factory settings and re-entering the necessary parameters.

If you get to the root of the problem, it can be solved. It is not necessary to call a technician for setup or take the computer to a service center.

The “DNS server is not responding” error may indicate both problems with your computer and more global problems.

Now we will list everything that a user can do in such a difficult situation.

Simple ways to solve the problem

Sometimes a problem that seems very complex can be solved quite simply.

Here's what you need to do from the very beginning:

• Restart your computer. Finding the true cause of this error can be quite difficult. It is quite possible that some operating system parameters are preventing it from connecting to the Internet. Therefore, it is better to start it again.
• Reboot your router. The same applies - some parameters go wrong from time to time. You can try to find them and configure them correctly, or you can simply start the system again. The second option is faster. Just unplug the router from the socket and turn it on after a minute.
• If the Internet does not come through the router, but directly through the cable, check its integrity. If possible, it is better to even go up to the roof of the house to see what is wrong with the wires - often, for example, hooligans cut them for some reason. If there is damage somewhere, it is better to replace or isolate this area.
• If you do connect through a router, try connecting directly. This way you can understand what the real problem is. If the connection is restored when connecting directly, try using a different router. This will make it possible to make sure that the problem is really in the old router.
• Just wait a while. It is quite possible that the provider is doing some work or for some other reason the connection is temporarily unavailable. Then you just need to wait a little.

Server settings

It happens that certain settings for connecting to the server, for example, its address, are lost. Therefore they need to be corrected.

This is done like this:

• Click on the connection icon in the tray (bottom right) with the right mouse button. In the drop-down menu select " Network Control Center...».
• In the window that opens, click " Change settings…» in the panel on the left.

• On the connection you are using, right-click and select “Properties” from the drop-down menu.
• In the window that opens, left-click once on the item “IP version 4 (TCP/IPv4)”. A little lower, click the “Properties” button.

• To put it simply, there should not be any addresses in the next window. Check two boxes " Receive address automatically", click "OK", restart your computer and try connecting again.

If setting the automatic receipt of addresses did not help, try setting the Google server addresses to 8.8.4.4.

This should be entered as “Preferred DNS Server” and “Alternate DNS Server” respectively.

Clearing cache

When connecting to DNS, a lot of different information is accumulated, in other words, a cache.

You should get rid of it, like any other type of cache.

The same applies to various temporary network parameters.

Fortunately, this can be done very simply - you only need to enter 4 commands:

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

They should be entered into the console, which is launched by entering cmd commands to the command execution window.

Let us remind you that it opens by pressing the “Win" and "R" buttons.

After entering each command, press "Enter" to execute it.

Driver Update

In some cases, updating network card drivers helps. This is done as follows:

• In the Start menu, type " Driver Manager" in the search bar. Run the found program.
• Find the section " Network adapters" There may be several devices. It's best to follow these steps for each of them.
• Right-click on the device and select " Update drivers».

• In the update window, first select automatic search for drivers. If the necessary files are found, install them. And if all else fails, try finding drivers for the selected device on the Internet. To do this, simply enter a query like “ [Device name] drivers" Then click " Search for drivers on this computer" If the system cannot find them, specify the path to the files manually.

It is advisable to restart your computer after this. But the Internet can be restored even after a regular update.

Disabling utility programs

The computer may have certain programs installed that work with the Internet.

They can use certain ports, some completely block the connection to the Internet or filter or limit it in some way.

For example, many antiviruses have a parental control feature.

It allows you to “detect” in time and not open sites that contain inappropriate materials (pornography, violence, etc.).

Of course, to perform such a function, you must have access to the connection.

Another example is a firewall. It literally filters all materials that reach the user.

But in some cases such programs do not work correctly. For example, they can completely block the Internet, despite the fact that the user did not give them such a task.

Some settings may be lost.

Therefore, all programs that are somehow connected to the Internet should be temporarily disabled.

But it is important not to turn off all of them at once. In this case, you will not be able to find the culprit. It is better to disconnect them one by one and see if the connection is restored.

The antivirus usually turns off easily - right-click on its icon in the tray and select “Exit” or “Disable”. The figure below shows this process for.

The same goes for many other Internet-related programs. They all involve creating a tray icon.

If this is not the case, go directly to the entire program and look for the shutdown button there.

As for the firewall (aka firewall), to turn it off, do this:

• In the window that opens, click " Turn Windows Firewall on or off».

• Place two checkboxes next to the items " Disable Windows Firewall (not recommended)" Click "OK".

As you can see, there is nothing complicated about this.

System rollback

Most likely, one of the recent changes in the operating system led to the lack of connection.

Therefore, it is best to roll back the system to a state when everything was still good.

To complete this task, do this:

• In the Start menu, enter the query “recovery”. You will be able to find the program " System Restore" Launch it.
• In the first window, click "Next".

• Next you will see the available restore points. Rely on the date when everything was fine with the connection. Click on the desired option and click "Next".

• In the next window, click “Finish”, confirm this action and wait for the process to complete.

If there was some kind of glitch in the operating system that prevented it from making the connection, it won't.

In any case, do not be afraid to call the provider and demand that a technician come to you and fix the problem.

This is included in the list of his responsibilities. This is especially true for cases when none of the methods we listed above help.