How to fix connection error. Typical Internet connection errors and their elimination. Typical error codes

Many users sometimes encounter errors when connecting to the Internet. This may be caused by problems on a specific computer or malfunctions on the ISP side. The error number allows you to find out the cause and find a solution without the help of operator specialists.

The most common mistakes

There can be quite a lot of them. Most of them are related to incorrect user settings. Most often, subscribers of providers encounter the following errors: 691, 678, 619, 769, 800. Each of them has different reasons. At the same time, many can be eliminated with your own hands, without turning to your provider for help.

Important! If you cannot solve the problem yourself, you need to call technical support.

Error 691

Perhaps the most common Internet connection error is 691, which indicates that the password is incorrect. It appears at the stage of checking registration data. Simply put, the error means that the provider's server was unable to correctly identify the user, or he was denied access to the network.

Causes of error 691 and solutions

In fact, error 691 when connecting can occur due to a fairly large number of reasons. Among them:

• the username or password is entered incorrectly;
• negative balance;
• The login is already authorized on the server.

Very often, when creating a new connection, users experience error 691 due to an incorrect login or password. In order to avoid this problem, it is recommended to first type the registration data in a notepad and copy it into the authorization window.

A negative balance with a number of telecom operators also leads to error 691 appearing on the user’s screen. The problem in this case can be solved simply by checking and topping up the account if necessary. Many providers allow you to log in Personal Area and without authorization on the server, and for some you will have to call technical support.

When trying to turn on the Internet, error 691 is given to the user, also provided that the previous session has not been closed. This happens quite rarely when disconnected from the Internet incorrectly. Just wait 5-10 minutes and connect again. If the connection continues to occur, then you should call technical support operators.

Important! In Windows 7, connection error 691 is not always shown. Very often, code 692 appears instead. Therefore, if an error message appears while checking your username and password, you should also follow the steps described above.

Error 678/651/815

Error 691, as mentioned earlier, is far from the only one that users encounter when trying to connect to the Internet. Another common problem involves the server not responding. The error code may differ in different versions of the operating system. In Windows XP it will be 678, in Vista it will be 815, and Windows 7 users will see a message with error number 651.

Causes of error 678/651/815 and its elimination

Error 678/651/815 has a huge number of possible causes. Among them:

• cable break;
• problems with the provider;
• errors in the firewall or antivirus;
• Incorrect configuration of the subscriber device.

If error 691 in most cases can be resolved independently, then when a message with code 678/651/815 appears, the user can only disable antiviruses and firewalls, and also check the cable inside the apartment and the subscriber device (router, optical terminal or modem) if present .

Important! Carefully check whether it is connected to the computer. This elementary thing is the most common cause of errors 678/651/815.

Error 619

The technology for connecting subscribers differs slightly between different providers. The reasons for the appearance depend on this

Users connecting using PPPoE can usually detect it due to insufficient balance or incorrect username and password. This type of connection is typical for the following operators: Rostelecom, Dom.ru and a number of others.

Subscribers using a mobile Internet connection via 3G/4G provided by mobile operators, you may see a message with code 619 due to problems with the USB modem or computer port. In this case, you may be advised to connect the device to a different connector and reinstall the drivers.

Clients of some networks connect to the Internet through a VPN. In this case, error 619 reports incorrect security settings. In the properties of the Internet connection on the “Security” tab, you must set the “Used during verification” option to the “Secure password” position. This type of connection is used, for example, by home Internet subscribers from Beeline.

Error 769/800

Windows XP users who have problems with drivers or local network connections will not receive a message with code 769, and those who have Vista installed will receive a message with code 800.
First of all, you need to check that your local network connection is active. This can be done in the Start menu in the Network Neighborhood section, selecting Show network connections or by accessing the Network and Sharing Center. If the local connection icon is gray, then you need to enable it using

If there is no local network connection, then the problem lies with the drivers. They must be reinstalled from the included disc or downloaded from the manufacturer's website.

Other errors

When connecting to the Internet, users may receive messages about other types of errors, but they are quite rare. It is quite difficult or even impossible for the user to eliminate some of them without the help of a specialist.

Let's look at other errors that often appear when connecting to the Internet, and ways to solve them:

• means the PPPoE protocol has been completed. As a solution, you can try to recreate the connection.
• Error 735 means that an incorrect IP address is being used to connect. In the settings, you must specify that the network address should be obtained automatically, or enter the correct parameters from the agreement with the provider.

In any case, if you cannot fix the problem yourself, you need to call technical support. A company specialist will suggest possible causes of errors and ways to eliminate them. And if necessary, he will also submit a request for installers to visit you.

U Windows users 10, at the time of connection, sometimes error 651 and similar errors occur. These are called "Internet connection errors". This occurs due to the occurrence of a software or hardware failure in the network equipment.

To restore the operation of the OS, you need to find out the reason why the failure occurred. This error appears when:

• There is no connection via Miniport, the network cable is damaged;
• Windows has incorrect settings network connection;
• The provider is carrying out technical work.

Internet connection error 651 Windows 10

There are several common simple options for resolving Windows 10 Internet connection errors:

First you need to find out that the local network connection is working. First a window opens "Network connections". There you need to select the item Enternet, where there are items such as:

• LAN name;
• LAN status;
• Network adapter used to connect a local network.

The user needs to check the state of the LAN; it has several values:

How to troubleshoot Internet connection problems?

Simple ways to fix the problem:

• Contact technical support and find out if they may have a problem. There may have been equipment malfunctions. If the operator answers that everything is working well for them, then you need to look for the problem on your PC.
• Execute reconnection modem or router cable and try to restart the high-speed connection;
• You can fix the error by restarting your computer and router/modem;
• Failures can occur when setting up a connection to your provider during the first launch. In this case, you should check whether all parameters are specified correctly.

Fixing an error that appeared as a result of connecting via a router (modem)

When the Internet cable is connected to the router, and the router and PC are connected via Wi-Fi, there is no need to launch a high-speed connection.

A high-speed connection in this situation will not work and error 651 will appear on the monitor screen. For normal Internet operation, it is enough that the PC is connected to the router and no other connection is required. In this case, you need to configure the router and create a connection. To do this, he needs to indicate the connection type, his name, password and other required information.

After completing the steps, the router will start working and distribute the Internet to all gadgets. No extra connections are needed. An important task in the operation of the Internet is the proper configuration of the router/modem. The instructions that come with the device will help with this.

Let's look at several reasons when the connection is made via an RJ 45 connector:

1. One of the causes of problems is damage to the RJ 45 connector. RJ stands for Registered Jack. It is a plastic rectangular connector that contains eight metal contacts that connect to the wires. Such connectors are often used for computer and telephone networks. Provides good contact connection. First, you need to remove the element from the connector of your PC or laptop and check it for damage.

Sometimes dust accumulates in the tip; for normal operation of the device, you can simply blow it out. Sometimes, to restore your internet connection, you just need to unplug the RJ and then plug it back in. Problems may be caused by wire deformation.

1. Problems with settings

Quite a popular reason why a connection problem occurs. In this case, it is better to create a high-speed connection:

• First you need to left-click on the network connection icon. Then you need to select a section: "Network and Sharing Center";
• After this, a window should pop up and select the item "Set up a new connection or network";
• In the window you need to click on "Internet connection", and then click on the word "Further";
• Next comes the point “High-speed (with PPPoE)”. Fields will appear in which you need to specify your personal login and password.

Then the user needs to click on the button "To plug". If the methods turn out to be useless when trying to resolve error 651, then the cause of the malfunction may be incorrect operation of the antivirus program or firewall.

1. Security systems

To fix the problem, you need to shut down the systems and try to connect to the Internet. First of all, to establish a connection, you need to disable your antivirus. Each user has their own antivirus installed and to disable it you need to read the instruction manual. Then you should disable the standard firewall - a set of software that monitors the launch of programs on the PC that access the Internet.

• To begin, you need to click "Start", find section "Control Panel" and go to the item called "Safety system".
• A window will appear in which you need to go to the item "Windows Firewall". Next, a menu will appear on the left and there will be a section "Turn Windows Firewall on or off". Next to the phrase "Disable Windows firewall» checkboxes are required.
• At the end of the procedure, you should restart the computer.

This error is also common if a router is connected. You can deal with it like this:

And download a program that resets the protocol settings. To do this, you need to click on the specified link. At the bottom there are two buttons called "Download". For operating room Windows systems 10 you need to press the second button. When the program is downloaded, the user needs to launch it and restart the PC at the end of the procedure.

1. Network card

In this case, there is most likely a problem with the drivers. They may either not work correctly or become outdated. The user needs to update the drivers. To do this you need to log in "Control Panel", in the line that appears, enter "Device Manager".

A list appears showing the devices. Selected from them "Updating device drivers". Then the dispatcher will appear, and select the item "Network adapters". After this, you need to select your adapter and click with the mouse (right button) on the item "Update drivers". Then you need to follow the conductor's instructions.

Sometimes, when using all the methods, the error does not disappear. This happens due to a faulty router. Then you should check the operation of the modem on another computer.

The inability to access the Internet on a device is a problem familiar to many users. Difficulties that lead to the inability to access the Internet are often related to both the provider and the Windows system.

For convenience, each Internet connection error has its own numerical designation, which helps you familiarize yourself with the description of the problem and the method of correction.

For each problem there is a step-by-step plan for eliminating it. If the steps taken do not help you gain access, you should contact technical support for help.

Full list of errors with numbers 6XX:

• 600, 601, 603, 606, 607, 610, 613, 614, 616, 618, 632, 637, 645 are due to a Windows OS error. Rebooting the PC solves the problem. If restarting the system does not help, you need to scan the device for viruses, remove new programs or return the latest changes in the settings to their original values;
• 604, 605, 608, 609, 615, 620 are due to incompatibility between the subsystem phone book file and the current configuration. You should restart the computer or delete and recreate the connection;
  
• 611, 612: Incorrect internal configuration. You need to restart your PC, check that the local network works correctly on the device. 612 is also associated with a lack of memory on the PC.
  
• 617: The OS is connecting to the network, or an internal error occurred while connecting to the Internet. We need to wait a few minutes. If the connection does not appear, you will have to reboot the device;
• 629: The VPN was terminated due to poor link quality or failed negotiation. The error can only be corrected by technical support;
  
• 633: The modem is in use or not configured. The reason is often freezing, so you need to reboot.
• 635: Unknown error. Reinstalling the VPN client or OS will help solve this problem. Occurs on old operating systems Windows 95/98;
  
• 642: The computer has been assigned a NetBIOS name that is already in use. In the properties of “My Computer” you should look and change the name in the “Identification” item;
  
• 650: No response from the server. The problem is related to incorrect settings of the network card or a physical malfunction of the network.

With code 7XX:

The most common mistakes

Let's look at the most popular faults and how to fix them:

• 638, 651,769 are typical errors that periodically appear on all devices when connected to the Internet. To solve them, you need to check the connection of the modem or router to the PC, the availability of drivers, and the correct settings;
  
• 691 – difficulties with authorization on the Internet. Associated with a negative balance or incorrectly entered username and password;
  
• 678 – no response from PPPoE connections. Work should be checked local server, VPN settings or firewall;
  
• 619 – “Unable to connect to remote computer" To solve the problem, find “Security” in the VPN properties and see if “Regular” is selected. The checkbox next to “Data encryption required” should be unchecked. Then a reboot is performed. The firewall is also disabled;
  
• 735 – problems setting up the VPN connection. The checkbox “Obtain DNS server address automatically” in the connection properties must be checked;
  
• 797 – “Modem not found or busy.” Restart your PC or modem, check the connection between the computer and the router;
• 800 – absence or network problems. Occurs for both the user and the provider. Reinstall network card drivers, view security settings and network connection properties.
  

Conclusion

Each error when connecting to the Internet has its own code. Knowing it, each user will independently troubleshoot problems that interfere with connecting to the World Wide Web.

Today, the Internet has become an integral part of our daily lives. Have constant access to global network is a necessary condition for comfortable work, communication, and entertainment. Over time, for greater user convenience, wi-fi routers and wireless adapters replaced the wired network. However, sometimes, instead of the declared convenience, one trouble may await you - an error like: “The Windows system is unable to connect to the Internet via a wi-fi connection.”

Causes of the error “Windows cannot connect to the Wi-Fi network”

This error appears on the monitor screen immediately after an attempt to automatically (or manually) connect to the Internet, which is a notification window about connection failure.

There are several reasons for this error, the most common of which are:

• freezing of Windows OS or router service commands;
• incorrect entry of the “network key” (password) when connecting;
• faulty wireless drivers wi-fi adapter;
• Internet connection settings failure in Windows.

Solving the problem: first steps

No matter how trivial it may sound, the first thing you should do is check the serviceability of the network connection of the router (router), as well as the Wi-Fi adapter to your PC (laptop). If all indicators are lit with a stable green light (power, Internet signal status), then try rebooting the router and then the computer. If the problem is not resolved, proceed to the next steps.

Checking the “network security key”

The next, relatively simple solution is to check that the “network security key” (password) is entered correctly when trying to connect a wireless connection. Even if you are sure that the password was entered correctly, it is still worth checking it in the router settings. To do this you will need to follow a number of steps:

The following instructions will be shown using the example of a SAGEMCOM brand router, however, the settings in each router are the same, they may only differ appearance settings windows, subcategories and names of individual items.

1. Open any Internet browser and enter the IP address of your router into the line (the factory sticker with information is usually located on the back of the router). Typically this address comes in two types: 192.168.0.1 or 192.168.1.1. In the authorization window that appears, enter your login and password (by default, you must enter the word “admin” in both lines).

   If you enter the wrong username/password, a page with the error “401 Unauthorized” will appear.

2. Go to the “Security” settings item (it is always located in the category called “Settings” wireless network"or "WLAN Settings").
3. Find the line with the words “WPA/WAPI/PSK Password” and look (check) the “network security key” written there. If the key is the same as the password you entered, then move on to the next solution to the problem.

   In the “SSID” settings field, you can also select the required connection from all existing ones on your PC

Video: setting up a “network security key” through the router parameters (using the example of “D-Link”)

Sometimes a technical failure of the router may occur, which leads to incorrect saving of the “network security key” settings, so the author of this article advises re-entering the “WPA/WAPI/PSK password”, applying/saving it and then rebooting the router/computer.

Installing (updating) the wireless wi-fi adapter driver

Like any electronic device, a wireless wi-fi adapter needs to constantly update its driver. An outdated version or its complete absence may lead to problems connecting to the Internet. Therefore, to solve it you need to do the following:

1. From the Start menu, open the Control Panel setting.

   "Control Panel" on Windows 10 can be found under the path "Start" / "All applications" / "System"

2. In the window that appears, select “Device Manager”.

   "Device Manager" can also be launched using the Windows search bar

3. Find the “Network adapters” category, select the model of your wireless wi-fi adapter by right-clicking and click on the “Update drivers” line.

   Update drivers by selecting the appropriate function in the context menu

4. After this, automatic driver updates will begin. When finished, restart your computer.

Video: methods for updating and installing drivers for network equipment

For optimal operation of the Windows system, it is necessary to regularly update drivers, not only for the wireless wi-fi adapter, but also for other devices. Therefore, the author of this article recommends using special utilities (for example: “Driver Reviver”, “DreverPack”, “ Driver Booster"and others) to scan the OS for outdated drivers, with their subsequent automatic updating. Thanks to such utilities you will save your time.

Setting up a wireless connection

It happens that the cause is a failure in the wireless connection settings. To restore settings you need to:

1. Open “Control Panel”, go to the “Network and Sharing Center” settings item.

   You can also open the Network and Sharing Center settings window using the Windows search bar

2. Select "Change adapter settings".

   By clicking on the "Network" icon you can get detailed information about Internet devices connected to the computer

3. Next, right-click on the “Wireless Network Connection” icon and click on the “Properties” menu.

   If there is a red cross next to the wireless connection, then there is a problem with its settings

4. From all components, select the line “Internet Protocol version 4 (TCP/IPv4), go to “Properties”.

   A network with Internet Protocol version 6 is more modern, but in Russia all well-known providers use protocol version 4

5. In the protocol properties, place markers next to two parameters: “Obtain an IP address automatically” and “Obtain a DNS server address automatically.”

   Even if both markers are in the right places, still reconfigure and resave the parameters again

6. Close the Network and Sharing Center settings and connect to the Wi-Fi network.

Diagnose and resolve network problems

If the problem with the wi-fi connection remains relevant, then it is worthwhile to automatically diagnose network problems using the appropriate Windows tool.

1. You must again go to the Network and Sharing Center settings panel (via the Windows Control Panel), and select the “Troubleshoot” item.

   The Troubleshooter tool can also be launched by right-clicking the Network icon (on the bottom taskbar of your desktop)

2. In the menu that appears, select the line “Internet Connections”.

   Additionally, you can diagnose the “Network adapter” category

3. Then follow the prompts and wait until the diagnostics are completed, followed by eliminating the errors found.

   By clicking on the “Advanced” menu, you can configure automatic/manual elimination of detected errors

4. After the procedure, restart your computer and try connecting to the wireless wi-fi networks.

Finding a solution by viewing the Windows event log

If not a single method of solving the problem could help, then you have a “special case”. To identify the cause of the problem, you should use the Windows event log. This will help you find out the code of the system error that has occurred for further steps to eliminate it. For this:

The “Event log” can also be found through the Windows “Control Panel” in the “Administration” tab

Then, select the “log filter” tool located on the right side of the window. In the filtering settings window, you must mark all sources associated with the Internet connection, such as:

To search for solutions to “special cases” using “event codes,” the author of this article recommends using the official Microsoft support website (https://support.microsoft.com/ru-ru). Since it has an extensive database of existing “codes Windows errors» (particularly related to network connection). You just need to use the website search engine by entering the “event code” of interest.

To search for a solution to a problem using the “event code”, you can use the site’s search engine

Most errors associated with connecting to a wireless wi-fi network are either the lack of installed drivers for a wi-fi adapter, or due to a failure in the settings of the Internet connection itself on the PC. In addition to “manually solving” these problems, you can also use the built-in Windows tool, “System Diagnostics,” to automatically find and fix problems that arise. To solve “special cases”, an “event log” is provided, thanks to which you can get Additional information on all faults, for their further solution.