Creating a unified information space at home or in the office is not just a convenience, but a necessity for effective data management. Local area network Allows you to instantly share files between computers, share a printer, and even stream video to your TV without the hassle of wires. When a cable connection is impossible or impractical, wireless technology comes to the rescue, providing flexibility and mobility.
However, automatic setup of Windows or other operating systems often fails, turning the connection process into a quest with an unknown outcome. Users encounter access errors, computers that are invisible in the "Network" list, or are required to enter passwords that no one has set. In this article, we'll look into these issues. SMB protocols, sharing settings, and router configuration secrets so you can establish a stable connection between all your devices.
Understanding the principles of operation LAN segment Wi-Fi will help you not only solve your current problem but also properly build your smart home infrastructure. We'll cover steps from checking your physical equipment to fine-tuning your firewall, eliminating common beginner mistakes. Get ready to delve into the world of IP addresses and subnet masks to transform the chaos of wires and signals into a well-oiled machine.
Preparing equipment and checking basic settings
Before attempting complex manipulations within the operating system, you must ensure that your wireless router is physically in good working order and functioning correctly. Router The router must be enabled, and the Wi-Fi indicators must be lit or blinking, indicating data transfer. All devices planned for networking must be connected to this router, not to a guest network or a neighbor's Wi-Fi, as client isolation often prevents communication between them.
The most important step is checking IP addressing. For the local network to function correctly, all devices must be on the same subnetsThis means that the first three digits of the IP address of the computer, laptop, and network storage must match; only the last digit can differ. Typically, routers automatically assign addresses through DHCP server, but sometimes static settings on one of the devices can create a conflict.
⚠️ Note: If you're using a guest Wi-Fi network, devices on it are often isolated from each other for security reasons. To create a local network, connect all devices to the primary SSID.
Check if your computer sees other devices in the basic list. You can do this using the command line by entering the command ipconfig and comparing the resulting address with the default gateway address. If the addresses are in different ranges (for example, 192.168.1.x and 192.168.0.x), then communication between them is impossible without changing the router settings.
Setting up a network profile and discovery in Windows
The Windows operating system by default tends to consider new connections as public, which automatically hides your computer from prying eyes and blocks incoming connections. To local area network To get it working, you need to change the network profile from "Public" to "Private." This tells the system you're in a trusted environment and opens ports for the device discovery service.
Go to Network & Internet settings and select your Wi-Fi connection properties. Under "Network Profile," select "Private." This will apply a new set of firewall rules allowing file and printer sharing. Without this step, other computers simply won't see your PC in the list of available devices, even if the passwords are entered correctly.
Next, you need to enable discovery features. In Control Panel, find "Network and Sharing Center" and go to "Change advanced sharing settings." Here, you need to enable network discovery and file and printer sharing for the current profile. It's also recommended to enable the option to manage network connections automatically.
☑️ Detection settings
Please note that changes do not take effect immediately. After applying the settings, you may need to restart the discovery service or completely restart your computer. If you are using a third-party antivirus, it may intercept Windows Firewall control, so check its security settings separately.
Organizing shared access to folders and resources
Once the devices have "discovered" each other, it's time to configure access to specific data. You can share any folder on your hard drive, making it readable or writable by other computers. To do this, right-click the folder, select "Properties," and go to the "Sharing" tab. Click "Advanced" and check "Share this folder."
The critical point is the setting permissionsOn the "Security" tab, you should add the "Everyone" group (or a specific user) and specify its permissions: read, modify, or full control. If permissions aren't specified here, even with open access, the system may return a "No access rights" error when attempting to open a file from another PC.
⚠️ Caution: Granting full permissions (modify and delete) to the "Everyone" group creates a risk of data loss. Use this option only on trusted home networks where there is no risk of accidental or malicious file deletion.
For quick access to shared resources, you can use a network path. Knowing the IP address of the host computer, you can enter it in the address bar of File Explorer in the format \\192.168.1.15This will allow you to instantly access shared folders, eliminating the need to search through the "Network" section. For convenience, frequently used resources can be mapped as a network drive by assigning them a drive letter (e.g., Z:).
What to do if the folder is visible but empty?
If you see a folder but nothing inside, check the nested permissions. It's common for the root folder to be accessible, but permissions inheritance is disabled for the subfolders. Go to the subfolder's properties -> Security -> Advanced -> Enable inheritance. Also, make sure your antivirus isn't blocking the SMB protocol at the file system level.
Connecting a network printer via Wi-Fi
Sharing a printer is one of the most popular features of home and office computers. LANIf you have a Wi-Fi-enabled printer, it's best to connect it directly to the router, bypassing computers. This way, it becomes an independent network device with its own IP address, accessible for printing from any network-connected device.
If the printer is connected via USB to one of the computers, that computer must be turned on for the others to print. In the "Devices and Printers" settings on the host computer, open the printer properties, go to the "Sharing" tab, and check "Share this printer." On the client computers, add the printer via "Add Printer" -> "The printer I want is missing" -> "Select by name."
| Connection type | PC addiction | Speed of work | Difficulty of setup |
|---|---|---|---|
| Wi-Fi (direct) | It doesn't depend | High | Average |
| USB (via PC) | Depends (PC must be turned on) | Average | Low |
| Ethernet (cable) | It doesn't depend | Maximum | Low |
| Print server | It doesn't depend | Depends on the model | High |
In modern operating systems, drivers are often installed automatically when a network device is detected. However, older models may require manual installation of drivers from a disc or the manufacturer's website before adding the printer. Ensure that the driver versions on all computers are compatible with the host operating system.
Troubleshooting network access and errors
Despite proper configuration, users often encounter the error "Unable to access \\computer" or a prompt to enter a username and password. Most often, the problem lies with user accounts. Windows requires both computers to have identical user accounts with the same passwords, or to allow passwordless access. The latter option is less secure, but more convenient for home use.
To disable the password prompt, in "Advanced sharing settings" under "All networks," select "Turn off password-protected sharing." If you want to maintain security, create a local user with the same username and password on both computers. Logging in with these credentials will ensure seamless access to resources.
Another common cause of failures is the service Workstation or SMB 1.0The SMB 1.0 protocol is deprecated and disabled by default in Windows 10/11, but older network-attached storage (NAS) devices or printers may require it to be enabled. You can find it in "Turn Windows features on or off."
⚠️ Caution: Enabling SMB 1.0 reduces the security of your network, as this protocol has known vulnerabilities. Enable it only if absolutely necessary for older equipment, and ensure your local network is isolated from direct internet access.
It's also worth checking the "Computer Browser" and "Function Discovery Resource Publishing" services. Stopping them may result in computers no longer appearing in the network list, although access by IP address will still work. Restart these services through services.msc often solves the problem of "lost" devices.
Wireless LAN Security and Optimization
When setting up a local network, it's important to keep security in mind. Open shared folders can become a backdoor for attackers if your Wi-Fi isn't secure enough. Use standard encryption. WPA2/WPA3 and a complex password on your router. Don't use WEP encryption, as it can be cracked in minutes, even by an inexperienced user.
To optimize the speed of large file transfers over Wi-Fi, we recommend using the 5 GHz band. It provides higher throughput, which is critical for working with video files or network backups. However, it's important to remember that 5 GHz has a shorter range and is less effective at penetrating walls than 2.4 GHz.
Regularly update your router firmware. Manufacturers frequently release patches that close security holes and improve the stability of network protocols. Also, keep an eye on Wi-Fi adapter driver updates on your computers, as they may contain improvements for local network performance.
Why is my computer not visible on the network even though the internet is working?
The internet and local network use different mechanisms. Most likely, your network profile is set to "Public" or network discovery is disabled. Also, check if your antivirus software is blocking local connections.
Is it possible to connect a computer running macOS or Linux to a local network?
Yes, you can. macOS uses the SMB protocol for compatibility with Windows. Linux uses Samba for this purpose. The main thing is to ensure all devices are on the same subnet.
How do I find out the IP address of another computer on the network?
On the target computer, open a command prompt and type ipconfigYou're interested in the "IPv4 address" line. You can also view the list of connected clients in the router interface.
Does internet speed affect file transfer speed in a local area network?
No, it doesn't. File transfer speeds within a local network are limited only by the speed of your Wi-Fi router and adapters. The internet can be completely disconnected, but files will still transfer at maximum speed.
What should I do if the connection is lost while transferring large files?
This may be related to your Wi-Fi adapter's power-saving feature. Go to Device Manager, find your adapter, and in the "Power Options" tab, uncheck "Allow the computer to turn off this device to save power."