Windows cannot access the computer on the local network. Step-by-step instructions for fixing a network error without Internet access on your own Why the public Internet is not available

Today I decided to prepare a small instruction with solutions to the problem when, when setting up Internet sharing via Wi-Fi in Windows 10, it is not possible to open Internet connection sharing.

How virtual Wi-Fi network works in Windows 10. And not only in the "top ten", in Windows 7 everything is exactly the same. First, with the help of commands, or through a special program, we launch an access point. After that, our laptop is already distributing a Wi-Fi network, but it does not have access to the Internet. That is, the network itself is there, you can connect to it, but the Internet will not work. Why? Yes, because you need to provide general access to the Internet. What does it mean. We are in the properties of the connection through which we connect to the Internet, we must allow general access to the Internet for the virtual WiFi networks.

Below we will look at the problems that often appear when setting up shared access for a virtual Wi-Fi network in Windows 10. It is not uncommon for people to share useful solutions to various problems in the comments on various articles. For which they thank you more!

No option to select a connection when opening Internet Sharing

I've seen many comments on this very issue. Also, share the solution in the comments. The problem is the following. We launched the distribution of a Wi-Fi network in Windows 10, on the page with adapters there is a "Connection via local network* 12" (number may be different). Now, we need to share the Internet for this connection.

We go to the properties of our Internet connection (usually, this is "Ethernet", or high speed connection), go to the "Access" tab, check the box next to "Allow other network users to use this computer's Internet connection", and we see that there is no way to select "Home network connection". There is only "Wireless Network", and there is no drop-down menu in which you need to select "Local Area Connection *". It looks like this:

Solution. Open the properties of the adapter through which you are connected to the Internet. It doesn't have to be an Ethernet adapter. Then, just uncheck "Allow other users...", and click Ok.

Then, open the properties of the same adapter again, check the box next to "Allow other network users to use this computer's Internet connection", and a menu should appear below in which you can select our "Local Area Connection *", which we launched. Click Ok.

You can also try disabling and enabling the adapter (by clicking on it with the right mouse button and selecting the appropriate item), and then check the box again. After these steps, you should have access to the Internet via the Wi-Fi network that we launched on the laptop.

If you still can't select your home network from the list, then make sure it's running. Where all the adapters are: "Ethernet", "Wireless Network", there should be "Local Area Connection *" with some number.

If you know any other solutions to this problem, then please share them in the comments to this article.

No "Access" tab in connection properties in Windows 10

Opening Internet connection properties (to share internet access), you can find that there is no tab "Access", on which you actually need to configure sharing.

1 First of all, you need to make sure that in the settings "Network and Internet" - "Network Connections" there is "Local Area Connection *". This means that the virtual network is running. If it is not there, then you need to start the network according to the instructions, the link to which I gave above.

2 If you have only one connection there at all, for example "Ethernet", then this tab will not be there, since there is not a single connection for which you could configure sharing. You need to install the driver on the Wi-Fi adapter and start the virtual network.

3 You may have already checked the "Allow other network users..." checkbox in the properties of other connections, such as "Wireless Network". Uncheck this box for all connections (from which it is possible), and the "Access" tab should appear.

4 If you have Windows 7, then in the initial version of "Starter" there is no possibility to share. In the home version of Windows 10, I did not notice any problems with this.

If I find out any more information on this topic, I will definitely add it to this article. And you can share your experience in the comments, or ask questions, we will understand.

Igor Alekseev, Candidate of Physical and Mathematical Sciences, Director of the UCI YarSU.

What is Internet Sharing?

Internet sharing for organizations is the most common solution. However, there are times when large organizations do not have a shared Internet. More precisely, there is no single and common Internet access for the entire organization, for example, some departments work through a dedicated line, and some employees use dial-up access modems to access the Internet. But there are more deplorable situations, when the system administrator does not even know that some department ordered and uses a special leased line.

Pros and Cons of Shared Internet Access

Naturally, Internet Sharing helps an organization keep its Internet costs under control and, most importantly, keep the network secure. Generally speaking, the unauthorized creation of Internet access channels by users should be prohibited not only by administrative, but also by technical measures. The network administrator must know what connections and channels exist in the corporate network, and especially where it is open to exchange information with the Internet, in order to protect the network from threats emanating from the Internet.

Thus, further we will consider the situation when an organization has one or more centralized Internet connections through which all employees of the organization have a common Internet access. Situations of confusion in Internet connections are clearly not normal and should be resolved first of all by administrative decisions.

The general Internet in the organization has a number of significant advantages. This is first of all:

1. the ability to control the Internet - all information flows incoming or outgoing from the local network of the organization.
2. the ability to install firewalls on the path of all incoming and outgoing IP packets to provide centralized network protection.
3. the ability to control the total expenses of the organization on the Internet.
4. possibility general accounting traffic and user behavior control on the Internet for the entire organization.
5. More effective use funds: two slow channels from the provider usually cost more than one fast one, traffic with large volumes of consumption can cost less. In addition, the so-called statistical multiplexing allows you to use the resources of the Internet channel for sharing more efficiently.

All this does not mean that the organization should have one Internet channel. There may be several of them, but the general Internet access assumes their centralized management, when all channels are considered as a single pool through which the general Internet access is carried out.

Speaking about the advantages of general Internet access in an organization, it is necessary to say about the difficulties that are present in it. The complexities are usually related to the fact that all users have a common access and, therefore, influence each other. In practice, it often happens that a large file download started by someone can take up all the resources of the common channel and prevent, for example, the accounting department from making an electronic payment. Thus, for the general Internet, the tasks of monitoring, accounting and managing user access become extremely important. In other words, those features that are mentioned as the benefits of general Internet access become necessary to implement!

How is Internet Sharing?

In order to understand how the tasks of traffic accounting, user rights management, and network security can be solved, it is necessary to understand how general Internet access works. Let's consider some scenarios of the organization of the general Internet access.

Shared Internet access for local network

In the simplest case, an organization's corporate network is a single local area network that is connected to the Internet via a dedicated line, an office building Ethernet network, or a home network. In this case, most often, the LAN switch includes channel equipment: xDSL modem / router or PPPoE / PPTP router that works with the provider's office or home network.

The administrator's ability to manage and control such a network will be limited by the settings available in the modem/router. As a rule, these are rather cheap devices, the control capabilities of which may be limited.

Corporate network with distributed offices and a centralized channel

In this case, the organization has its own private network, ordering leased lines between its offices and combining their local networks into a single routable space. One of the offices, well located geographically, becomes the center where the Internet channel is laid from the provider. As a rule, in this case, the routing equipment for combining the local networks of individual offices has advanced management and accounting capabilities. Also, organizations with such a network structure install separate systems - Internet control servers in order to solve the problems of traffic accounting and user access control. Internet Control Servers give IT staff greater flexibility and help leverage the powerful features of routing equipment. For example, turning a report on the consumption of traffic by IP addresses into statistics for specific users. Network protection can be implemented by separate specialized devices or be one of the functions of the Internet control server. Rational use for general access of the main and backup Internet channel, Internet control by the server can also be provided.

Routed corporate network with distributed Internet channels

Such a network automatically appears in an enterprise that combines the local networks of its remote sites by renting channels from an Internet provider, i.e. building a so-called virtual private network. Except that each office can get its own Internet access, this scheme is no different from the previous one. When entering into an agreement with a provider for a leased line, the client, as a rule, can choose whether this line will be routed to the Internet or not. However, from a topological point of view, it will often be more profitable not to drive Internet traffic to one central office, but to receive Internet access in each office. How, then, to make Internet access common, and not scattered and unmanaged?

You can also solve this problem using a set of Internet control servers in each office where there is an independent Internet channel. For the administrator of such a network, the management of general Internet access from all offices in this case will be transparent and convenient.

Thus, the optimal solution to the problem of setting up managed shared Internet access in all cases will be to use an Internet control server - one, in the case of one local network, or a single Internet channel and several, if Internet channels are available in geographically remote points of the company's network.

Setting up sharing

On the example of using A-Real Internet control server developed by A-Real Consulting.

Shared Internet on a local network with one Internet channel

Initial conditions: ADSL line from the provider, ADSL modem performs WAN translation ADSL interface modem. Inside the local network, "gray" addressing is used, for example 10.0.1.0/24.

To set up general Internet access, you must enable the internal interface of the A-Real Internet control server in the port of the LAN switch. On the internal interface of A-Real Internet Control Server, set the IP address and mask of your local network, for example, 10.0.1.254/24. On the external interface of the A-Real Internet control server and the LAN interface of the ADSL modem, set "gray" addresses from a different range, for example 10.0.255.1/24 and 10.0.255.255/24 respectively.

Further, if your network uses a proxy server, you can transfer its task to the built-in proxy server of A-Real Internet Control Server. To do this, simply configure the proxy server address on the browsers of computers on the local network: 10.0.1.254 port 3128.

• For example, by clearly linking users to computers, you can set up the simplest scheme on A-Real Internet Control Server - by IP addresses. Naturally, in this case, measures must be taken to ensure that users cannot change their IP addresses on their own, for example, not to give them administrative access to computers.
• Authorization on the proxy server. You can give users individual logins and passwords to access Internet resources through a proxy server.
• Authorization via windows domain controller. A-Real Internet Control Server can obtain user information from an Active Directory domain controller, in which case the user will only need to log into the windows domain with his password in order to get general Internet access through A-Real Internet Control Server.
• Authorization through a separate program. If the use of a domain controller is not included in your plans, you can install a small program on users' computers, which is included in the A-Real Internet control server delivery package, which will request the user's login and password when accessing the Internet.
• Authorization via PPTP or PPPoE. You can set up a PPPoE or PPTP server on the Internet server so that users access the Internet through a VPN tunnel, which each of them's computer must establish with the Internet control server - each with its own username and password.

Internet Sharing via A-Real Internet Control Server

A-Real Internet control server is ready software internet Gateway. It is installed on a dedicated computer connected between the local network and the Internet. A-Real

When you try to connect from one Windows computer to another, you may see a message like "Windows cannot access // *computername*" that is located on the local network. The error often occurs on Windows 7 and 10, but can also appear on 8 and other less popular versions of the system.

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Problem types and error codes

Error about problems Windows connections to the local network sometimes appears on Windows 7 after installing one of the official system update packages. At the end of the window, in this case, an error code is given - 0x80070035. Most often, the problem is banal and caused by incorrect system settings on the computer (or on one of the computers), which is why all the problems with creating a local connection arise.

The error code message may look different:

1. Windows cannot access a computer on a Windows LAN (7, 8, 10, XP).
2. Permission to access 'computername' is missing. Contact your network administrator for access.
3. Windows cannot access a computer on the network (local or home network, computer, network drive).
4. Windows cannot access the computer. Check the spelling of this name.

Error codes that may appear after the message: 0x80070035, 0x80004005, 0x8007004b, 0x800704b3. It remains to figure out what each error means and how to get rid of the problem.

Error 0x80070035 "Network path not found"

The most common error, saying that Windows simply did not find the path where you can establish a connection. To solve the problem, follow a few simple instructions.

Examination sharing settings:

1. Right-click on the local drive that cannot be connected to.
2. Select the "Properties" item, in the window that opens, go to the "Access" tab.
3. Click "Advanced settings", check the box next to "Share this folder".
4. Make sure that the Share Name field contains exactly the local drive to which you want to connect.

If the error continues to appear, you should try setting sharing a computer's IP address. This can help bypass the error and set up a connection directly using the resource's IP address.

This requires:

1. Click "Start", type cmd in the search and find the command line.
2. Right-click on the found application and run command prompt as administrator.
3. Type "ipconfig /all" (without quotes) into the command line field, press Enter.
4. In the field that appears, find the IPv4 address of the computer. It looks like 192.168.X.X.
5. In the Run window that appears, enter the IP and local drive in the format //192.168.1.1/F (where F is the name of the local drive).

If again nothing worked, and Windows still cannot establish a connection, it makes sense to check that the Device Manager is working correctly.

Job setup device manager:

1. Press the key combination Win + R.
2. Enter devmgmt.msc in the field and click "OK" to enter the device manager.
3. In the window that opens, click the "View" tab in the top menu.
4. In the drop-down menu, check the box next to "Show hidden devices".
5. In the list of all devices, find and click on the "Network adapters" list.

The list of drivers that appears should be considered in detail. Outdated and unused network drivers may conflict with new Windows software, especially after some security patches. To fix the connection problem, uninstall all old and unused drivers, and then restart your computer. The system should automatically install new version ON. You can manually update the available drivers for the displayed devices to avoid deleting the necessary files.

Correction of errors with account rights

Sometimes Windows cannot access another computer on the local network for quite simple reasons. Error codes 0x80070035, 0x80004005, 0x8007004b, 0x800704b3 and other notifications may well be caused by these reasons, so you should check for their absence.

1. The permissions have not been set for the user from which the connection is being attempted. Make sure the user you are connecting to has administrator rights. The administrator account must be added to the list of allowed users.
2. Different passwords are set in the Windows Security dialog box. You should study the instructions for creating and distributing a local network and correct the errors found.
3. The user is not the owner of the files and folders that he is trying to distribute on the local network.

In order to become the owner of a folder or file, you need to:

1. Right-click on a file or folder.
2. Select "Properties".
3. Go to the "Security" - "Advanced" - "Owner" tabs.
4. Add the desired account to permissions.

In addition, you will need to give the added account full access. This is done in the "Properties" - "Security" - "Edit" - "Add" tab. Only after these steps, you need to give this or that folder or files access to the local network. The error should disappear and Windows will establish the connection without any problems.

Solution for "Windows cannot access \\PC name" error

To fix a local connection error with this note, you need to perform a few simple steps with the folder you want to connect to:

1. Right click on the folder.
2. Select "Sharing" from the submenu.
3. Go to the "Specific Users" section.
4. In the window that appears, click on the triangular arrow next to the "Add" button and select the user for which you want to grant access. If users are not displayed in the list, you need to select the "All" item.

For the added user, you can set the access level: read or read and write. After that, you need to click on the "Share" button and, if no errors or notifications appear there, click the "Finish" button. The method helps on Windows 7 and newer. In XP, the interface may be called a little differently, but the principle of error correction remains the same.