Upgrading to a new laptop or urgently needing to exchange large files with a colleague often leaves you faced with the following dilemma: no cable at hand, and only a 16GB flash drive. In such a situation, the built-in capabilities of the operating system and wireless networking become a real lifesaver. Modern technologies allow for high-speed data transfer, rivaling wired connections, if the equipment is properly configured.
There are several proven methods for transferring information over the air, and the choice of a specific method depends on the operating system version, the amount of data, and security requirements. Local Area Network (LAN) remains the most stable option for large archives, while cloud services or specialized utilities are suitable for quickly synchronizing smaller documents. Understanding how network protocols work will help you avoid common mistakes and wasted time.
In this guide, we'll detail the steps for various scenarios, focusing on setting access rights and resolving firewall conflicts. You'll learn how to create shared resources, use the "Nearby Sharing" feature, and utilize third-party software to speed up the process. The key is to ensure both devices are in the same information space and have the correct visibility settings.
Preparing laptops for wireless transmission
Before you begin configuring complex network settings, you need to make sure both devices are ready to communicate. The basic requirement is that both laptops are connected to the same network. Wi-Fi networksIf you're using a mobile hotspot or router, make sure the signal is stable and your devices are within a strong coverage area. Different frequency bands (2.4 GHz and 5 GHz) aren't usually an issue, but they can slightly affect the final copy speed.
The second critical step is checking the computer and workgroup names. The operating system must see the device on the network, and not just an abstract "Unknown Computer." To check, right-click on "This PC" and select "Properties." Here you will see the device name and domain or workgroup. By default, Windows uses the name WORKGROUP, and it should match on both laptops.
⚠️ Note: If one of the laptops is connected via a guest Wi-Fi network (Guest Network), file transfer may be blocked by client isolation settings on the router. In this case, the devices will not be able to physically see each other.
It's also worth paying attention to the network profile. Windows automatically classifies new connections as "Public," which enforces strict security rules and hides your computer from other devices. To successfully transfer data, you need to change the network profile to "Private" in the Wi-Fi settings. This action will allow the device to be discovered and open ports for file sharing.
Setting up sharing in Windows 10 and 11
Properly configured sharing settings are central to file sharing. Without these features enabled, the operating system will block any incoming read or write requests. Go to "Control Panel," select "Network and Sharing Center," and click "Change advanced sharing settings."
In the window that opens, you'll see profiles for the current network (Private) and guest mode. In the "Private (Current Profile)" section, you need to enable the following options:
- 📡 Turn on network discovery (allows other computers to see your laptop).
- 💾 Enable file and printer sharing (allows access to shared resources).
- 🔐 Allow Windows to manage HomeGroup connections (relevant for older versions, but useful for compatibility).
Next, scroll down to the "All Networks" section. Here you'll find the important "Public Folder Sharing" setting. If you plan to use default folders (Documents, Pictures), you can make them visible to everyone. However, for security, it's best to leave this feature disabled and share specific folders manually.
Don't forget to save your changes by clicking the "Save Changes" button at the bottom of the page. The system will then apply the new firewall rules. If you're using a third-party antivirus with a built-in firewall (such as Kaspersky or ESET), make sure it's not blocking local connections by marking your home network as trusted.
Creating and sharing a folder for transfer
After enabling network functions, you need to create or select a directory through which data will be exchanged. Create a new folder on the disk, for example, call it Transfer or ExchangeRight-click on it and select "Properties", then go to the "Sharing" tab.
Click the "Advanced Settings" button and check the "Share this folder" box. Below, in the "Share Name" field, you can leave the default name or choose a more descriptive one. Pay special attention to the "Permissions" button. Here, you need to explicitly specify what actions other users can perform.
For full file sharing (copying in both directions), it is recommended to add a group All (or a specific user if the systems are domain-linked) and set full access:
- 📝 Full Control — allows you to read, write, modify, and delete files.
- 📂 Change - allows editing and deletion, but not changing access rights.
- 👁 Read — only viewing and copying files from the server.
It's important to remember to check the "Security" tab in the folder properties. It often happens that network access is open, but NTFS (file system) permissions block writing. Add a user All and in this list, click "Edit" → "Add" → enter All →"Check Names". Check the "Full Control" box for this group.
☑️ Folder setup checklist
Using Nearby Sharing
For Windows 10 and 11 users, there is a more modern and simpler method that does not require complex settings of rights and shared folders. Nearby Sharing Nearby Share uses a combination of Bluetooth for discovery and Wi-Fi Direct for fast file transfers. This method is ideal for one-time transfers of photos or documents.
To activate the function, open "Options" (keys Win + I), go to the "System" section and find "Nearby Sharing." Make sure the switch is set to "On." In the Visibility settings, select "Everyone nearby" if your devices aren't linked through the same Microsoft account, or "My devices only" if your logins are the same.
The transfer process is as follows:
- On the source laptop, select a file or group of files in File Explorer.
- Right-click and select "Share" (or the share icon in the top bar).
- The second laptop's name will appear in the list of available devices. Click on it.
- A notification will pop up on the receiving device asking if you want to save the file. Tap "Accept" and "Save."
The transfer speed in this mode may vary, but it is significantly higher than via Bluetooth, as the main data stream is transmitted over Wi-Fi. The advantage of this method is that there is no need to enter passwords or IP addresses; everything happens automatically after user confirmation.
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What should I do if devices don't see each other in 'Nearby Sharing'?
Make sure Bluetooth and Wi-Fi are enabled on both devices. Also, check that device discovery is enabled in your privacy settings. Sometimes restarting the 'Feature Discovery Service' in Task Manager helps.
Direct connection via IP address and Explorer
If automatic discovery doesn't work or the network is complexly configured, the most reliable method is to connect via a direct IP address. This method bypasses discovery services and accesses the network resource directly. First, find out the IP address of the receiving laptop. On it, open a command prompt (enter cmd in the search) and enter the command:
ipconfigFind the "IPv4 Address" line in the wireless network adapter section. It usually looks like this: 192.168.1.XX or 192.168.0.XXWrite down these numbers. Now go to the first laptop, open "This PC," and enter the address in the address bar at the top in the following format: \\192.168.1.XX (where XX is the address of the second laptop) and press Enter.
The system may prompt you for credentials. Enter the username and password you use to log into Windows on the second (receiving) laptop. If there is no password, you may need to create one or change the security settings to allow blank passwords, although this is not recommended.
For convenience, you can create a shortcut for permanent access:
- 🖱 Right-click on an empty space on your desktop.
- 📁 Select "Create" → "Shortcut".
- 🔗 In the location field, specify the network path:
\\192.168.1.XX\FolderName. - 🏷 Give the shortcut a name, such as "Friend's Laptop".
| Parameter | Description | Example of meaning |
|---|---|---|
| IPv4 Address | Unique address of the device on the local network | 192.168.1.105 |
| Network name | Computer name on the network (NetBIOS) | DESKTOP-ABC123 |
| UNC path | Full resource address | \\192.168.1.105\Photos |
| SMB port | Port for file sharing | 445 |
Using third-party software for high speed
Built-in Windows tools sometimes become unstable or require extensive configuration. In such cases, specialized utilities that create their own tunnel for data transfer come to the rescue. One of the leaders in this field is the program Resilio Sync (formerly BitTorrent Sync) or SyncthingThey operate on a P2P principle and do not require complex router configuration.
The principle is simple: you install the program on both laptops, create a new folder, and receive a special access key. Enter this key on the second device, and the folders sync automatically. The speed is limited only by the capabilities of your Wi-Fi router and range.
⚠️ Important: When using cloud syncing services or third-party software, ensure you transfer data over an encrypted connection, especially if it involves sensitive information. Local P2P solutions are generally more secure than public clouds.
Another option is to use FTP servers. You can run an FTP server on one laptop (for example, via Total Commander or FileZilla Server), and connect the second one as a network drive. This gives you full control over the process and allows you to resume interrupted downloads, which is critical when transferring files tens of gigabytes in size.
Frequently Asked Questions (FAQ)
Why can't my laptop see another laptop on the network, even though it's a shared Wi-Fi network?
Most often, the problem lies with the network profile. If the network is marked as "Public," Windows is hiding the computer. Also, check if "Network discovery" is enabled in the advanced sharing settings and that your antivirus isn't blocking local connections.
What is the maximum file transfer speed over Wi-Fi?
Speed depends on the router standard and adapters. Wi-Fi 4 (802.11n) delivers speeds of approximately 30-50 Mbps. Wi-Fi 5 (802.11ac) can reach speeds of 100-400 Mbps, and Wi-Fi 6 (802.11ax) can deliver speeds of over 500 Mbps under ideal conditions, comparable to fast USB 3.0.
Is it possible to transfer files if one laptop is on Windows and the other is on macOS?
Yes, it's possible. On a Mac, open "System Preferences" → "Sharing" and enable "File Sharing." Then, in Windows, enter the address in File Explorer. \\IP-address-MacYou will be asked to enter your Mac username and password.
Is it safe to transfer data through a shared folder in a cafe?
No, this is risky in public places. Attackers on the same network may try to access your shared folder. In such cases, use a direct Wi-Fi connection (using the "Nearby Sharing" feature and the "My Devices" setting) or a physical drive.