In today's digital world, the need to quickly transfer gigabytes of data between devices arises constantly. Using external drives like flash drives often seems inconvenient, and cloud storage can be limited by internet speed or traffic limits. It's at times like these that the most effective solution becomes direct connection equipment via a wireless network. This allows for local information exchange at high speeds, independent of provider connections.
Establishing an over-the-air connection between two computers is a task accomplished using the operating system's built-in tools, without installing any additional software. You don't need to be a system administrator to set it up. local area network (LAN) within a single apartment or office. All you need is a basic understanding of IP addressing and a working router or direct connection.
In this article, we'll explore all the current methods for establishing such a connection. We'll cover the classic router method, which ensures stability, and the more flexible option of creating a virtual network directly between devices. Understanding these mechanisms will give you complete control over data transfer in any situation.
Selecting the optimal connection method
Before setting up, it's necessary to determine the architecture of the future network. There are two main scenarios, each with its own advantages and limitations. The choice depends on the availability of active equipment and mobility requirements.
The first and most common option is to use Wi-Fi routerIn this setup, both laptops connect to the same wireless network, which is broadcast by the router. This is ideal for stationary workstations where the devices are within range. Here, the router acts as a dispatcher, automatically distributing IP addresses and managing traffic.
The second option is to create a computer-to-computer (Ad-hoc) network or use the Mobile Hotspot feature. This method allows you to connect devices directly, without the need for an external router. One laptop acts as an access point, and the other connects to it as if it were a regular WiFi network. This method is critical in situations where the router is unavailable, broken, or maximum isolation of transmitted data from the external network is required.
- 📡 Via router: Both devices are connected to the same WiFi network, the Internet can be shared.
- 💻 Direct connection (Hotspot): One laptop distributes WiFi, the second one connects, but the second device may not have internet access.
- 🔒 Safety: A direct connection eliminates the risk of data interception from the external network.
⚠️ Attention: When using Mobile Hotspot mode on a sharing laptop, internet access for the connected device may be disabled unless connection sharing is configured.
Preparing equipment and drivers
The success of the operation directly depends on the correct operation of the hardware. Before starting the setup, make sure that both laptops are working properly. Wi-Fi modulesUnlike a wired connection, here we rely entirely on a wireless adapter, which must support the standards 802.11n, 802.11ac or newer to ensure decent transfer speeds.
Check that your network card drivers are up-to-date. Network device visibility issues are often caused by outdated software or issues with the wireless network management service. Open Device Manager and ensure the adapter is working properly.
It's also important that the "Private" network profile is enabled on both computers. If Windows considers your network to be "Public," it will automatically hide your computer from detection by other devices for security reasons, making it impossible to connect.
☑️ Check before setup
Method 1: Setting up a network via a router
This is the most stable method, requiring minimal effort. If you have a working router that both laptops can connect to, use this method. It provides the best compatibility and speed, as the router takes over all control.
Connect the first laptop to the router's WiFi network. Then do the same with the second device. Key point: both laptops must be on the same subnet. Routers typically assign a range of addresses. 192.168.0.x or 192.168.1.xIf both devices received addresses from the same DHCP server, they already “see” each other at the physical level.
Next, you need to set up sharing. Open Windows Settings, go to Network & Internet, and select Sharing Options. Here, you need to enable network discovery and file and printer sharing for the current network profile. Without this step, the operating system will ignore connection requests even if a connection is established.
After enabling these features, restart the computers. The names of both devices should appear in File Explorer under "Network." If this doesn't happen, you may need to manually enter the IP address of the target computer into File Explorer's address bar.
Method 2: Direct Connection (Mobile Hotspot)
If you don't have a router handy, Windows 10 and 11 allow you to turn one of your laptops into an access point. This method emulates a router's operation using software. Configuration should begin on the device that will be "sharing" the network.
Go to network settings and find the "Mobile Hotspot" section. Enable it and select "Wi-Fi" as the connection method. The system will prompt you to set a network name and password. Write this information down or remember it; you'll need it to connect the second laptop.
On the second laptop, find the created network in the list of available WiFi connections and enter the password. After a successful connection, the system may warn you that the network has no internet access—this is normal for local file transfers. The main thing is that the communication channel between the machines is established.
Problems with the frequency range
Some older network cards don't support the 5 GHz band. If the second laptop can't see the network, try changing the band to "Any available" in the hotspot settings on the first device or force it to 2.4 GHz.
It's important to note that in this configuration, one computer acts as the server and the other as the client. The transfer speed will depend on the antenna strength of the transmitting laptop and the distance between the devices. For maximum efficiency, place them in close proximity to each other.
Setting up file sharing and forwarding
Once a physical connection has been established (either through a router or directly), you need to grant access to specific folders. Simply connecting the computers isn't enough—you need to allow reading and writing of data. Select the folder you want to make accessible, right-click it, and select "Properties."
Go to the "Sharing" tab and click "Advanced." Check "Share this folder." Below, under "Permissions," ensure that "Everyone" or a specific user has read and write permissions. This will allow the second laptop to not only retrieve files but also write new ones.
An alternative, easier method is to use the "Shared Folders" feature in Windows Settings. Under "Network" -> "Advanced Sharing Settings," you can enable access to shared folders. Files placed in the system "Shared Documents" folder will automatically be visible on the other device.
| Parameter | Value for Folder A | Value for Folder B | Result |
|---|---|---|---|
| Reading | Allow | Allow | Exchange files in both directions |
| Change | Allow | Ban | Read only from Folder B |
| Full access | Allow | Ban | Deleting files from Folder B |
| Network discovery | Included | Included | Visibility on the Web |
⚠️ Attention: When granting full access to folders on your local network, make sure that no other devices are connected to your WiFi network, as they will also have access to your data.
Solving common connection problems
Even with proper configuration, situations may arise where computers cannot see each other. The most common cause is the built-in computer blocking connections. Windows Firewall or antivirus software. If an access error occurs when attempting to open a network folder, temporarily disable your firewall to test this hypothesis.
Another common issue is time or name synchronization issues. Make sure both laptops have the same date and time. Also, make sure the computer (workstation) names on the network are unique. If two devices have the same name, a conflict will occur, and one of them will be unavailable.
Sometimes resetting network settings helps. In the command prompt, run as administrator, and run the command netsh winsock reset, and then be sure to reboot the system. This will clear the network protocol cache and resolve any TCP/IP stack errors.
Alternative programs for data transfer
If fiddling with Windows settings and access rights seems too complicated, there are third-party utilities that create their own transmission channel over WiFi. Programs like Resilio Sync, Send Anywhere or Feem allow you to transfer files using the Drag-and-Drop method, bypassing the standard Windows sharing settings.
Such apps often use P2P (peer-to-peer) technology, automatically discovering devices on the local network. They can be especially useful when transferring files between different operating systems, such as Windows and macOS, or if corporate security policies prohibit changes to network settings.
However, it's worth remembering that using third-party software requires installation on both devices and may consume more system resources. For a one-time transfer of large amounts of data, native Windows tools remain the most efficient and secure solution, without the need to download additional applications.
Why doesn't the second laptop see the first one on the network?
Most likely, the network profile on the first laptop is set to "Public." In this mode, Windows hides the computer. Go to "Settings" -> "Network & Internet" -> "Status" -> "Connection Properties" and switch the profile to "Private."
What is the maximum transfer speed for WiFi?
Speed depends on the WiFi standard. For 802.11n (2.4 GHz), the actual speed will be 20-40 MB/s. For 802.11ac (5 GHz), speeds can reach 300-500 MB/s and higher, comparable to fast flash drives.
Do you need internet to transfer files between laptops?
No, internet access is not required. The local network operates autonomously. The main thing is that the devices are connected to each other via a router or directly, even if the ISP's cable is disconnected.