Creating a local network between two computers is one of the most popular tasks for home work and entertainment. There's often a need to quickly transfer gigabytes of movies, photos, or work projects when cloud storage is slow or the bandwidth limit is reached. Wi-Fi connections Allows you to organize data exchange without unnecessary wires, maintaining order in your workplace and providing sufficient speed for most tasks.
There are two main scenarios for implementing this: connecting via a shared router or creating a direct connection between devices (Ad-Hoc mode). The choice of method depends on your infrastructure and security requirements. In the first case, both devices must be on the same wireless network; in the second, one computer acts as an access point for the other, which is useful if there is no router.
The setup process requires attention to detail, especially when it comes to naming devices and selecting the network type. Modern operating systems, such as Windows 10 And Windows 11, have significantly simplified this process by hiding complex settings in clear interfaces. However, a basic understanding of the operating principles IP addressing and file exchange protocols will help you avoid common errors and quickly diagnose problems if the connection fails the first time.
Preparing equipment and checking drivers
Before you begin software configuration, you need to make sure that the hardware is in good working order. Wireless adapters Both computers must be enabled and functioning properly. If you're using laptops, there are usually no issues, as Wi-Fi is built in by default. Desktop computers may require installing an external USB adapter or PCIe card, and the drivers for the latter must be up-to-date.
Particular attention should be paid to the distance between devices. For the stable transfer of large amounts of data, the signal must be strong. If the computers are in different rooms with several concrete walls between them, the connection speed may drop to unacceptable levels. Ideally, both devices should be within line of sight of the router or each other if using a direct connection.
Drivers are checked through the Device Manager. If the list of network devices contains unknown devices or icons with an exclamation mark, you should first resolve this issue. Without a properly functioning driver network interface will not be able to support the required file discovery and sharing protocols.
Setting up a network via a router (Classic method)
The most common and stable method is to connect computers via a wireless router. In this case, the router acts as a manager, distributing traffic and IP addresses. First, make sure both computers are connected to the same Wi-Fi network. This is a basic requirement, without which further configuration is pointless.
Selecting a network profile is a critical step. When you first connect to a new network, Windows asks if you want to make this computer discoverable. To create a local network, select "Yes" or the "Private" profile. If you select "Public," the system blocks incoming connections for security reasons, and the computers simply won't "see" each other.
You can check and change your network type in the system settings. Go to Wi-Fi settings, select your connection properties, and make sure the switch is set to "Private." This will enable the necessary discovery services and allow incoming connections through the firewall.
☑️ Check network settings
After changing the network profile, it's recommended to reboot both computers. This will allow services to re-register with the network and correctly exchange data with the router. Often, changing the profile from "Public" to "Private" resolves the issue where devices are physically connected but cannot see shared folders.
Direct connection of computers without a router
Situations where the router is unavailable, damaged, or simply missing require the use of ad hoc mode. In modern versions of Windows, this feature is implemented by creating a "Mobile Hotspot" or setting up a "Computer-to-Computer" connection. One of the computers acts as a virtual router, distributing Wi-Fi.
To implement this method, on the first computer (which will be the server), go to the network settings and find the "Mobile Hotspot" section. Enabling this feature will create a new Wi-Fi network with a unique name and password. The second computer should find this network in the list of available connections and log in by entering the password.
It's important to understand that when using the built-in Wi-Fi adapter to create a hotspot, it may stop receiving internet from another source if it doesn't support dual-mode operation. However, this isn't a problem for local file transfers. Speeds over this connection may be lower than through a full-fledged router due to the way the wireless adapter operates in access point emulation mode.
Direct connection limitations
With a direct connection, one computer consumes more power because its adapter operates in enhanced signal transmission mode. Connection stability issues may also occur when using older drivers or 802.11b/g adapters.
After successfully connecting the second device, the logic remains the same: ensure the network is recognized as private and enable file sharing. This method is ideal for temporarily setting up a network in the field or if the primary network equipment fails.
Setting up sharing and permissions
Even when successfully connected to the same network, Windows hides the drive's contents from prying eyes by default. To make folders visible, you need to enable network discovery. Open Control Panel, go to Network and Sharing Center, and select Change advanced sharing settings.
In the window that opens, for the "Private" (current) profile, do the following: turn on network discovery, enable file and printer sharing, and allow Windows to manage HomeGroup connections. Without these options enabled SMB protocol, responsible for file sharing, will block access attempts.
Configuring access to specific folders deserves special attention. Simply enabling sharing isn't enough—you need to specify which directories will be accessible. Right-click a folder, select "Properties," go to the "Sharing" tab, and click "Advanced." Here, check the "Share this folder" box and configure the permissions (read or read/write).
For users who want to simplify access as much as possible and not worry about passwords on their home network, there's an option to disable password-protected access. It's located in the same advanced settings menu. However, using this option reduces security, making files accessible to anyone who connects to your Wi-Fi.
Solving visibility and access issues
A common issue is when computers are connected and the settings are correct, but the devices don't appear in Network Neighborhood. This may be due to Windows services. Make sure the "Function Discovery" service is running and in automatic mode. You should also check the "Function Discovery Resource Publishing" service.
Another common blocker is antivirus software and firewalls. Third-party antivirus programs often have their own network protection modules that can block local connections, deeming them suspicious. Temporarily disable your firewall or add your local network to the list of trusted zones.
If computer names contain special characters or are transliterated, name resolution conflicts may occur. In this case, the easiest way to access the computer is by its IP address. You can find the address using the command ipconfig in the command line. In Explorer, enter \\192.168.1.XX (where XX is the address of the second PC), and access to shared resources will open directly.
| Problem | Possible cause | Solution |
|---|---|---|
| Computers can't see each other. | The network is marked as "Public" | Change the profile to "Private" in the Wi-Fi settings |
| Password prompt upon login | Password protection is enabled | Disable in sharing options or enter credentials |
| Low transmission speed | Weak signal or 2.4 GHz band | Move devices closer or switch to 5 GHz |
| "Access Denied" error | Incorrect folder permissions | Set permissions in the folder properties (Access tab) |
Alternative methods of data transfer
If setting up a full-fledged local network seems too complicated or time-consuming, there are simpler, albeit less functional, options. For example, using cloud services (Google Drive, Yandex.Disk) or instant messaging apps. However, these are dependent on internet speed and have file size limits.
Another option is to create a temporary FTP server environment or use specialized software like Resilio Sync or SyncToyThese programs can automatically synchronize selected folders between computers over a network, bypassing complex Windows settings. They are often faster and more reliable than the standard SMB protocol.
Using third-party software
Applications like Total Commander with an FTP plugin or specialized LAN transfer utilities (such as Feem) often bypass Windows system limitations and work out of the box, requiring only installation on both PCs.
For one-time transfers of large files (e.g., 100 GB of video), using an external hard drive or SSD remains the fastest and most reliable method. No wireless network, even Wi-Fi 6, can match the stability and speed of a direct USB 3.0/3.1 connection for one-time transfers.
⚠️ Caution: When setting up shared access in offices or public spaces, strictly avoid disabling password protection. This can lead to the leakage of confidential data, as anyone connecting to the Wi-Fi network will have access to your files.
The method you choose depends on your specific needs. For permanent work in the office or at home, it's best to properly configure a standard Windows network once. For occasional file transfers between personal laptops, cloud services or temporary access points are suitable. Understanding the principles of operation local network gives you flexibility and independence from third-party services.
Why can't computers see each other even though they have the same Wi-Fi?
Most likely, the computers have different network profiles (one on a private network, one on a public network) or network discovery is disabled. Also, check if your antivirus software is blocking the connection.
What is the maximum Wi-Fi transfer speed on a local network?
Theoretical speed depends on the standard: up to 600 Mbps for Wi-Fi 4, up to 6.9 Gbps for Wi-Fi 6. Actual speed is usually 50-70% of the theoretical speed due to overhead and interference.
Is internet required for a local network to function?
No, internet access is not required. The local network works between devices directly or through a router, even if the ISP cable is disconnected. The main thing is that the devices can "see" each other.
Is it safe to leave folder sharing enabled all the time?
A home network with a strong Wi-Fi password is relatively safe. In public places or when you have guests, it's best to disable public access or use a guest network.