How to restore your Internet connection. How to restore the Internet after a virus changes DNS settings

If you are faced with a lack of access to the Internet or some sites have stopped opening, then two options are possible: a virus is blocking access to some sites or your antivirus has removed a malicious program that has changed the operating system settings that determine the connection to the Internet. These may be browser proxy server settings, settings network card(Internet Protocol version 4), LSP stack configuration, etc.

As a result, you are faced with a situation where websites stop opening. Messages appear that “The web page is unavailable”, “You are not connected to the network”, “The proxy server is not responding” and other similar ones.

Ways to solve the problem “No Internet access”

The instructions below will help you solve problems with Internet access. Moreover, a variety of methods are used, from the simplest to those requiring special programs. Do them one by one. If Internet access is restored at any of the stages, then you can stop and not perform the following. If you have any questions, leave a comment below, ask a question in the section on our website, or contact us for help.

1. Restore your browser's proxy server settings.

Internet Explorer, Microsoft Edge and Google Chrome

All three of these browsers Internet Explorer, Microsoft Edge And Google Chrome use the same proxy server settings. To return them to their original values, do the following.

Launch Internet Explorer. Click on the gear-shaped button located on the right top corner browser(). A menu will open as shown in the following picture.

Click on the item Browser properties. You will be shown a window with several tabs. Select a tab Connections.

Click on the button Network setup as shown below.

In the section Proxy server uncheck the box next to the inscription Use a proxy server for local connections . Click OK and again OK.

Mozilla Firefox

Launch Firefox. Open the browser menu by clicking on the button in the form of three horizontal stripes (), which is located in the upper right part of the window. You will see the main Firefox menu, as in the picture below.

Here click on the gear icon with the inscription Settings. A window will open in front of you with Firefox settings. Click on the inscription Additional.

In the window that opens, in the section Compound, click on the button Tune. This action will open the settings that determine which proxy server the browser should use.

Select an item No proxy and click on the button OK. Restart your browser.

2. Restore Internet Protocol version 4 settings.

Windows XP, Vista, 7

Click on the button Start, in the menu that opens, select Network connections.

Windows 8, 8.1, 10

Press on the keyboard at the same time Windows keys and the X(H) key. A menu will open as in the following figure.

Select an item Network connections.

A window will open in front of you with a list of all network connections.

Click on the name of your adapter (network card) and select Properties.

A window will open with the properties of the selected network adapter. In the list of components, find the item Internet Protocol Version 4(TCP/IPv4).

Double-click on the selected item. In the window that opens, check the boxes Obtain an IP address automatically And Get DNS server address automatically.

Click OK and again OK.

By setting these settings this way, you will give Windows feature obtain the IP address and DNS server address from the router, modem or router. If your computer uses static network address, then enter it in the previous step.

3. Clear DNS cache.

The DNS cache stores a table of correspondence between the site name and its IP address. Some viruses can replace this correspondence and thus block the opening of certain sites, as well as redirect users to various misleading web pages.

Like the following picture.

Enter in the field Open team cmd and press Enter. Will open command line. Type ipconfig /flushdns in it and press Enter.

4. Restore the LSP stack configuration.

LSP is software service in the Windows operating system, consisting of several layers. Each layer defines one program. All information requested from the Internet passes through this group of layers. Thus, if one of them, or a program that is bound to one of the layers, is incorrectly removed, the entire LSP service will crash, resulting in the Internet connection becoming unavailable.

Windows XP, Vista, 7

Press the Windows key and the R(K) key on your keyboard at the same time. A window will open as in the following figure.

Enter in the field Open team cmd and press Enter.

Windows 8, 8.1, 10

Press the Windows key and the X(H) key on your keyboard at the same time. A menu will open as in the following figure.

Select an item Command Line (Administrator).

A command prompt will open. Type netsh in it winsock reset and press Enter.

Restart your computer.

5. Use AdwCleaner to remove malware components that block Internet access.

AdwCleaner is small free utility created by Xplode programmer. It will quickly scan your computer and remove components malware, which can block access to the Internet or to specific sites.

Download, if the file download does not start automatically. After the program has finished downloading, run it. The main AdwCleaner window will open.

Click on the button Scan. This process can take up to several tens of minutes. When the scan is completed, you will see a list of detected malware components.

Click on the button Cleaning. AdwCleaner will begin cleaning your computer. To complete the process, you will need to restart your computer.

6. Use TDSSKiller to remove hidden Trojans and rootkits that block Internet access.

TDSSKiller is a free utility created by Kaspersky Lab. It can find and remove many different rootkits such as TDSS, Cidox, RLoader, Phanta, ZeroAccess, SST, Pihar, Sinowal, Cmoser and the like.

On the page that opens, click on the green button Download

Click on the button Start checking. The program will begin scanning your computer.

Wait until the scanning is completed and the detected rootkits are removed. When the program finishes, the computer must be restarted.

7. Use Malwarebytes Anti-malware for additional scanning.

Malwarebytes Anti-malware This is an excellent program created by Malwarebytes. It easily removes a wide variety of Trojans, rootkits, malicious and potentially unnecessary programs. The program is absolutely free for home use.

On the page that opens, click on the green button Download, if the file download does not start automatically. Run the downloaded file.

After installation is complete, you will see the main screen of the program.

The program update procedure will start automatically. When it ends press the button Run scan. Malwarebytes Anti-malware will begin scanning your computer.

When scanning your computer is finished, Malwarebytes program Anti-malware will open a list of detected malware components.

Click on the button Delete selected to clean your computer from malware that may be blocking Internet access.

Conclusion

By following these instructions, you should be able to solve the problem with no Internet access. Unfortunately, there are variants of infection when these instructions may not help you, in this case, contact our.

To avoid infecting your computer in the future, please follow three small tips.
1. Always try to download programs only from official or trustworthy sites.
2. Keep anti-virus and anti-spyware programs updated to latest versions. Also note that you have automatic Windows update and that's all available updates already installed. If you are not sure, then you need to visit the site Windows Update, where they will tell you how and what needs to be updated in Windows.
3. If you use Java, Adobe Acrobat Reader, Adobe Flash Player, then be sure to update them on time.

Living in the age of the Internet using latest technologies, it's hard to imagine modern life without online services provided by the Internet. And what to do if your Internet connection suddenly and unexpectedly disappears for you. How to restore the Internet if the connection fails? In most cases, loss of connection to the Internet occurs after incorrect removal of programs that modify network settings Internet and as a result of viruses entering the computer.

The free utility WinSockFix will help you restore your Internet connection. The utility eliminates problems of connection loss after using various types of network and antivirus programs. The program resets the current network settings to initial settings like after Windows installations. After restarting your computer, you can reconfigure your Internet connection.

After setup network parameters definitely do it backup copy registry keys using the utility, then in the future you can always quickly and reliably restore your Internet connection with the current settings. Works without installation on a computer.

In some cases, it will help to restore your Internet connection and troubleshoot other problems. free tool Microsoft Fix it. The program is designed to eliminate various network and browser problems that arise when using the operating system. Windows systems. Data recovery by this program is in many cases completely guaranteed.

It will help restore your Internet connection and the configuration of some applications. free program Complete Internet Repair. The program helps solve network problems in the following cases:

• Restore Internet and network settings after deletion spyware, viruses, worms, Trojans, etc.
• In cases of network loss after installing some programs
• Lost connection due to registry errors
• Network adapter errors or DHCP errors
• In case of limited connection
• Problems with Windows Update
• Firewall configuration issues
• If the Host file changes
• Other problems

The program is portable, can work from a flash drive, and does not leave entries in the registry. The problem of how to restore the Internet can, in most cases, be solved independently, without involving specialists or installing complex programs. Two basic rules must be followed:

• Don't try to fix what isn't broken
• Not everything can be fixed with just a program.

The programs listed above really help restore your Internet connection, and it’s completely free; I’ve used the first two several times with success.

Gone are the days when the Internet was unstable. The era of ultra-high-speed Internet has begun, which is transmitted via fiber optic line and Wi-Fi. But in small towns and settlements the good old “ twisted pair" The connection to the provider occurs through telephone line. This causes additional inconveniences such as low speed, poor contact, line break. The Internet may also disappear due to a modem failure or failure software, network card malfunction. We will look at how to restore your Internet connection, as well as the reasons for its absence, in this article.

Why does the Internet disappear?

There can be many reasons for this. The first thing that comes to mind is problems on the provider's side. There may be a cable break if the connection is through a telephone line. The fiber optic cable can be damaged by intruders or ill-wishers. Technical work the provider is accompanied by an Internet shutdown, although he should warn you in the newsletter. Mobile communications also suffers from this disease. IN to a greater extent this happens as a result of network congestion when many subscribers are using the Internet at the same time. Most often this happens on weekends or holidays.

The Internet connection can also be interrupted due to internal problems. The reason may be a failure of the modem or router. Network card motherboard your computer may fail, and this may also be the reason for the interruption. Remember that your provider is responsible for all Internet failures, except for computer breakdowns. Upon your first call, he must fix the problem within three days. In order to find out how to restore your Internet connection, you need to understand the reasons for its disconnection.

How to detect a fault

First of all, we check our balance. This can be done in personal account on the provider's website. If your account doesn't have cash, then the administration has the right to disconnect your connection. This rule applies to both wired internet, and mobile. If everything is in order with the balance, then we next check all the cables that go to the modem and from the modem to the computer. They may be accidentally damaged or come out of their nests. If everything is fine with the cables, then we look to see if all the LEDs on the modem or router are lit. The LED responsible for the connection with the provider should be constantly on. If it blinks or goes out altogether, then there is no connection with the provider.

Network card is faulty

If the cables and modem are working properly, check the network card on the computer. A network card is a device responsible for transferring data between the modem (router) and the processor. A network card failure is a fairly rare occurrence. Maybe the driver was incorrectly updated during operation, and the card is simply not available in the device manager. In this case, update the driver.

To do this you need:

• right-click on the “start” icon, which is located in the lower left corner;
• select "device manager" from the list;
• find device" network adapters" and open the list;
• Right-click on the top line and select "update driver".

After this, the driver will be updated automatically and the Internet will work.

Computer malfunction

Software failure is another reason for the lack of internet. How to restore it in this case? operating system The computer is updated frequently. Malfunction may occur as a result of installation failed update. In such cases, do a system rollback to control point, if available. If there is no checkpoint, then roll back to original condition.

In order to roll back your computer to its original state, you need to do the following:

• left click - on the "start" menu - "parameters";
• select “update and security” from the list;
• in the new window, select the “recovery” tab;
• Click on the "start" button.

The computer will begin the recovery procedure. This will take some time, after a reboot the connection will be restored.

Modem malfunctions

How to restore the Internet if the modem malfunctions? The modem cannot be repaired yourself. This is what service centers do. The telephone numbers of service centers are indicated in the Internet service agreement. It will be a plus if the modem is rented and it was installed, according to the contract, by a professional service center your provider. Then the latter will be obliged to carry out repairs, and if this cannot be done, then replace the modem free of charge.

Restoring mobile internet

Mobile Internet is different from wired Internet. It is distributed via radio communication, so it can be unstable and depends on the vagaries of the weather and the distance between the subscriber and the tower. Mobile Internet may be lost in a forest or mountainous area. To restore MTS Internet, for example, you need to reduce the distance to the transmitting antenna.

If only you have lost the Internet, but others are working fine, then you need to call your provider to find out the reason. In addition, the Internet may be interrupted due to a malfunction of the mobile device or modem. To find out, you need to change the priority in the settings. Instead of 3G, specify 2G - this may work. If the phone receives 2G, then the problem is definitely mobile device. In a similar way, you can restore Megafon Internet.

Conclusion

Losing connection is a very unpleasant moment. This is especially true mobile internet. Large quantity instant messengers in which people communicate allow them to always be in touch with each other, send messages, share photos and videos. Most applications for navigation, taxi search, online shopping - one way or another, depend on a good Internet connection. Therefore, the question of how to restore the Internet will be relevant long time. Some tips from this article will help you stay connected and not get lost in difficult situations.

If critical errors appear in the operation of the Internet Explorer 11 browser, then to restore it normal operation Usually it is enough to reinstall the browser. But in some cases you can get by by resetting the parameters or returning home page.

Reset settings

Let's look at the procedure for resetting and restoring the Internet Explorer browser using the example of version 11 of the program, which is installed on Windows 7. To reset Internet settings Explorer 11, launch a web browser. Next:

After completing the Internet Explorer settings rollback procedure, you need to restart your computer. The next time you launch your browser, you will see that our settings are set to their original settings.

Changing your home page

If you do not want to reset Internet Explorer 11 settings to original state, but only want to change the browser home page, then follow these steps:

If you don't need a specific home page when you start Internet Explorer 11, then check the Start with Tabs box in the Startup box. In this case, the next time you start the browser, the page that you were viewing on the Internet before closing the program window will open.

If the home page was forcibly changed virus app, then before returning the original data, you need to clean your computer from infection from the Internet.

Check the system with an antivirus, and additionally run a scan in free anti-malware utilities such as Malwarbytes.

Browser recovery

If you reset the settings and manual change home page does not help resolve crashes that occur in Internet work Explorer 11, then try to restore normal operation of the web browser by reinstalling it.

Remember that Internet Explorer in Windows is not limited to just displaying web pages. All versions of IE, including 11, are essential system applications, without which normal operation one cannot hope for system stability. Therefore, Internet Explorer cannot be uninstalled; If you are not going to use the built-in browser, just install another browser and forget about IE.

I recently encountered this problem with a new Windows installation. Although when adding a network drive the “Recover at logon” checkbox was selected, for some reason this almost never helps. Although in principle home network this is not particularly critical, because to restore the connection to the network share, you just need to click on the disk (and in Win7 you don’t even have to re-enter the password), in an enterprise network, where, for example, 1C databases can be stored on a network drive, this Windows glitch can cause big trouble. To solve this problem, some apparently particularly smart programmers even write small programs for connecting network shares. It's called MapDrive, you can Google it. I propose several solutions exclusively standard means Windows, without cluttering your computer with auxiliary software.

Method 1

Method 2

Method 3