Today's digital landscape is rarely limited to a single device in the home. It's common to need to transfer large video files, photos, or work documents between a desktop computer and a mobile laptop. Using USB flash drives or cloud storage isn't always convenient: the former have speed and capacity limitations, while the latter require a stable internet connection and time to load. Local area network, created using a wireless protocol, solves these problems instantly.
Connecting devices into a single ecosystem allows not only for data exchange but also for resource management. You can run a demanding game on a powerful PC and stream the image to a laptop while lying in bed. Or use one computer as a media server for another. The main advantage here is the absence of unnecessary wires and high transfer speeds within your network. Wi-Fi router.
The setup process only seems complicated at first glance. Modern operating systems, such as Windows 10 and 11, have built-in tools for automatic device detection. However, for everything to work stably and securely, several key network and firewall settings must be properly configured. In this article, we'll cover all the nuances of creating a reliable connection.
Equipment and network preparation requirements
Before moving on to software settings, you need to make sure that your hardware base is ready for work. Basic condition — Both devices must be within range of a strong signal. If the laptop constantly loses connection to the router, stable data transfer will be impossible. It's best if both devices support the standard. 802.11ac (Wi-Fi 5) or newer for maximum speed.
It's critical that both computers are connected to the same network. Users often encounter the problem of one device being connected to the main network and the other to a guest network. Guest networks are isolated by software, and devices on them cannot see each other for security reasons. It's also worth checking that the network adapter is enabled on both devices.
⚠️ Note: If your router supports the 5 GHz band, use it. The 2.4 GHz band is often congested by neighboring networks and household appliances, which can reduce file transfer speeds by 3-4 times.
You can use the command line to diagnose the current connection status. This will help you determine whether the devices can see the gateway and each other. Enter the command ipconfig in the terminal to find your IP address. The devices must be on the same subnet, for example, 192.168.1.X and 192.168.1.Y.
Setting up sharing options in Windows
By default, the Windows operating system blocks external file connections to protect your data from intruders in public places. To allow sharing between your personal devices, you need to change your network profile. Go to Settings → Network & Internet → Status and make sure your Wi-Fi network is marked as "Private" and not "Public".
Next, you need to configure advanced sharing settings. Open Control Panel → Network and Sharing Center → Change advanced sharing settingsHere are the key switches needed to pair the laptop and computer. You need to enable network discovery.
- 🔘 Turn on network discovery - allows your computer to see and be visible to other devices.
- 📁 Enable file and printer sharing — grants permission to read and write data to shared folders.
- 🔐 Use 128-bit encryption - provides basic protection for transmitted data packets.
At the bottom of the settings window, find the "All Networks" section. We recommend enabling password-protected sharing here if you want to ensure that only you have access to your files. If you want to simplify access in a trusted home environment, you can disable password protection, but this will reduce your security.
Creating a shared folder for data exchange
Once the network foundation is laid, you need to create a place to store the files. You can share any existing folder or create a new one specifically for sharing. Right-click the folder, select Properties → Access and click the "Advanced settings" button.
In the window that opens, check the box "Share this folder." Click "Permissions" below. Here you can fine-tune permissions: allow read-only access or grant full access to modify and delete files. For a home network, you typically select full access for the "Everyone" group or a specific user.
| Access type | Description | Recommendation |
|---|---|---|
| Reading | You can only open and copy files. | For media libraries |
| Change | You can edit and delete files | For work projects |
| Full access | Full control over the folder and rights | For administrators only |
An alternative, faster way is to use the "Share Folder" feature (HomeGroup in older versions or simply "Give Access to" in newer versions). Click on the folder, select the "Shared" tab, and add the desired user from the list. The system will automatically apply the necessary permissions.
☑️ Checking folder settings
Connecting to shared resources by IP address
Sometimes automatic discovery doesn't work correctly, and computers don't show up in Network Neighborhood. In this case, the most reliable method is a direct connection via IP address. First, find out the IP address of the computer where the folder is located (command ipconfig (in the command line).
On the second device (laptop), press the key combination Win + Rto open the Run window. Enter the address in the format \\192.168.1.15 (insert your current IP address). If everything is configured correctly, a window will open with a list of available folders. For convenience, you can right-click the folder and select "Mount as network drive" to make it appear as a separate drive in "My Computer."
⚠️ Please note: IP addresses assigned by your router via DHCP may change after a reboot. If you plan to use the network frequently, configure a static IP address in the adapter settings or reserve an address in the router settings using the MAC address.
If the system prompts you for a username and password when connecting, enter the credentials for the user account on the computer where the folder is located. If you have multiple accounts, it's important not to mix up the credentials. Also, make sure the time zone and time are set to the same on both devices, otherwise the Kerberos security protocol may block the connection.
What to do if Windows says "Unable to access"
Often, the problem lies with the "NetBIOS over TCP/IP Helper Service." Go to the IPv4 adapter properties → Advanced → WINS tab and select "Enable NetBIOS over TCP/IP."
Remote control and desktop
Connecting devices isn't just useful for files. You can control your computer from your laptop using the protocol. RDP (Remote Desktop Protocol)This turns a laptop into a fully-fledged terminal for a powerful desktop PC. This feature is built into Windows Pro versions, but Home versions require third-party software.
To enable the built-in tool, go to Settings → System → Remote Desktop and toggle the switch to the "On" position. On the client device, launch the Remote Desktop Connection application, enter the IP address or hostname of the target PC, and click "Connect."
- 🖥️ High performance - RDP uses hardware graphics acceleration.
- 🔒 Encryption - all traffic is protected by the TLS standard.
- ⌨️ Device passthrough — the ability to use the local keyboard and clipboard.
If standard Windows tools aren't suitable (for example, one of the machines is running Linux or macOS), consider cross-platform solutions like TeamViewer or AnyDesk. They work over your existing Wi-Fi connection, eliminating the need for complex port configuration if the devices are on the same local network.
Solving typical problems and diagnostics
Despite protocol standardization, users often encounter errors. The most common is "Windows cannot access \\computer." This is usually caused by a firewall blocking the connection. Check that "Private networks" is checked in the firewall settings for the "File and Printer Sharing" rule.
Another common issue is desynchronization of work profiles. Make sure that in Control Panel → Administrative Tools → Services The following services are running: "Function Discovery Resource Publishing," "Computer Browser," and "SSDP Discovery." If they are stopped, start them and set the startup type to "Automatic."
Antivirus software is also worth mentioning. Third-party security solutions (Kaspersky, ESET, Avast) often have their own built-in firewalls that ignore Windows settings. If you encounter problems, try temporarily disabling network protection in your antivirus for diagnostic purposes.
⚠️ Note: Windows settings interfaces may vary slightly depending on the update version (21H2, 22H2, etc.). If you don't find the option, search in the Start menu for keywords, such as "manage advanced sharing settings."
Questions and Answers (FAQ)
Is it possible to connect a computer and a laptop directly without a router?
Yes, this is possible by creating an ad-hoc network or a direct Wi-Fi connection (Wi-Fi Direct). However, in Windows 10/11, this feature is hidden or removed. The easiest way is to share Wi-Fi from a laptop (mobile hotspot) and connect the PC to this network, but the speed will be limited by the laptop's module.
Why is the transfer speed so low even though the router is powerful?
Speed may be reduced by the 2.4 GHz band, interference from microwave ovens, or neighbors. Also, check if file encryption (EFS) is enabled on your folders, as on-the-fly encryption puts a significant load on the processor and reduces network write speeds.
Is it safe to keep sharing enabled all the time?
If your network profile is set to "Private," Windows blocks incoming connections from outside the network (from the internet). However, all devices within the local network have access. If outsiders can connect to your Wi-Fi, it's best to disable public access or use a guest network for guests.
How to transfer files between Windows and macOS via Wi-Fi?
On macOS, go to System Preferences → General → Sharing → check "File Sharing." On Windows, enter smb://Mac-IP-Address in the address bar of File Explorer. You'll need to enter your Mac username and password.