Creating a local network between a computer and a laptop via WiFi

A modern home is rarely complete without several computing devices, and there's often a need to quickly transfer gigabytes of data from one device to another. Using external hard drives or cloud storage isn't always convenient, especially when the internet connection is busy and a flash drive isn't readily available. This is where a USB flash drive comes in handy. local area network, organized using a wireless protocol. This solution allows not only for file sharing but also for online gaming and shared printer resources.

Many users are afraid of the word "setup," assuming it will require in-depth knowledge of network protocols or the installation of complex software. In fact, the operating system Windows already has built-in tools for creating such an infrastructure. You don't need to be a system administrator to connect a desktop computer and laptop into a single ecosystem. Simply follow the logical sequence of actions and understand which parameters can be changed in the menu.

In this article, we'll cover every step: from checking your hardware to setting up shared folders. We'll cover both classic methods via the "Network" interface and more modern approaches, including using third-party software to simplify the process. The key to a successful connection is that both devices are on the same subnet and the discovery service is working correctly. Let's move from theory to practice.

Preparing equipment and checking drivers

Before delving into the operating system settings, you need to ensure the hardware is ready for operation. A wireless connection requires functioning WiFi modules on both devices. While this is usually a no-brainer on a laptop, a desktop PC may only have a wired Ethernet port. In this case, you'll need a USB WiFi adapter or a motherboard with an integrated module.

Make sure both devices are connected to the same router. This is a fundamental rule; breaking it makes further configuration pointless. Even if you're using the same router, but one device is on the guest network and the other on the main network, they may not be able to "see" each other due to client isolation. Check the connection status in the system tray or through the network settings.

Keeping your drivers up-to-date is crucial. Outdated network card software may not work correctly with discovery protocols or have speed limitations. Go to Device Manager and check the adapter's status. If you see a yellow exclamation point or a device with an unknown ID, installing the drivers is your first step.

It's also worth mentioning the security protocol versions. If your router is configured to operate in security mode WPA3, and the network card of the old laptop only supports WPA2, connection issues may occur. Ideally, both devices should support the same encryption standard for stable operation.

⚠️ Note: Some antivirus programs have built-in firewalls that block the detection of new devices on the network. If, after all the settings, the computers still cannot see each other, try temporarily disabling the third-party antivirus for diagnostics.

Setting up the network type and access profile

By default, Windows considers new connections to be public, which means maximum security and hiding your device from others. To create a local network, we need to change this profile to "Private." This will make your computer visible to other trusted devices within range.

To do this in Windows 10 or 11, go to the "Settings" menu, then select "Network & Internet." Under "Status" or "Wi-Fi," click the properties of your current connection. Here you'll see a network profile switch. Select "Private."

After changing the profile, the system will automatically apply a series of firewall rules. Ports required for file and printer sharing will be opened. If you're using a corporate network or have strict security policies, this step may require administrator privileges or approval from your IT department.

It's important to understand the difference between a domain and a workgroup. For home use, a workgroup is appropriate. By default, in Windows, it's called WORKGROUPChanging this name is not necessary, but it must be the same on both computers to ensure it displays in the network environment.

Enabling discovery and sharing services

Even with the correct network profile, data sharing features may be disabled at the operating system level. We need to enable network discovery. Open "Control Panel," go to "Network and Sharing Center," and select "Change advanced sharing settings."

Here you'll see the "Private" and "Guest or Public" profiles. In the private network section, enable the following options:

• 📡 Enable network discovery (and installation of network devices).
• 📂 Enable file and printer sharing.
• 🔐 Let Windows manage HomeGroup connections.

Password protection deserves special attention. If you enable password-protected sharing, accessing files from a laptop will require the username and password of the user account on the host computer. For a home network, disabling this option is easier, but this will reduce security.

What to do if the service does not start?

If you've enabled the settings but the network isn't working, press Win+R and enter services.msc. Find the services "Discovery Resource Publishing," "Discovery Function," and "Discovery Provider Host." Make sure they're running and the startup type is set to "Automatic."

Please note that changes do not take effect immediately. After applying the settings, it is recommended to reboot both devices. This will reset the network name cache and force a refresh of the list of available devices in the SMB protocol.

Creating a shared folder and setting permissions

Now that the infrastructure is ready, you need to determine what data will be accessible. You don't have to open the entire C: drive; creating a single folder, for example, is sufficient. Exchange or Shared_FilesRight-click on it and select "Properties".

Go to the "Access" tab and click "Advanced." Check "Share this folder." Below, click "Permissions." Here you can fine-tune what other users can do: read only files, or also modify and delete them.

There's also a "Security" tab in the folder properties. This is the NTFS permission level, which works in conjunction with network permissions. If access is denied at the security level, network settings won't help. Make sure "Everyone" or a specific user with read/write permissions is listed in the group list.

To quickly transfer large amounts of data, you can use direct path specification. On the second computer, open File Explorer and enter the IP address of the first computer in the address bar, for example: \\192.168.1.55This will allow you to bypass the time-consuming process of searching for a computer in your network environment.

Comparison of connection methods and their characteristics

There are several ways to establish a connection between devices, each with its own pros and cons. The choice depends on your goals: whether you need a permanent network for video streaming or a one-time photo transfer.

Let's look at the main options in a comparison table:

Method Ad-hoc Allows you to create a direct network between your laptop and PC without a router. This is useful if you don't have an internet service provider, but this method requires manual IP address configuration and is less stable. For most home use, the traditional router-based setup is preferable.

Using specialized software such as Syncthing or Resilio Sync, allows you to sync folders even over the internet, bypassing your router's NAT. This is convenient if your devices are in different physical locations but require constant access to data.

Solving typical problems and errors

Despite its apparent simplicity, users often encounter a situation where computers can't communicate with each other. One of the most common causes is different versions of the SMB protocol. In Windows 10 and 11, the older SMBv1 protocol, which may be used on older NAS systems or Windows XP/7 PCs, is disabled by default.

If you see the computer on the network but it requires a password to log in, and it doesn't work, try disabling password protection in the advanced sharing settings. Also, make sure the date and time are set to the same on both devices. Out-of-sync clocks can block Kerberos authentication.

DNS issues can also interfere with name resolution. Instead of a computer name LAPTOP-USER Try using its IP address. You can find it out with the command ipconfig in the command line. If logging in via IP works, but not via name, the problem is with the DNS or NetBIOS service.

⚠️ Note: Windows settings interfaces may differ depending on the update version (21H2, 22H2, etc.). If you can't find the item, use the search in Settings or the command control to call the classic control panel.

Frequently Asked Questions (FAQ)

Is it possible to create a network if one device is Windows and the other is macOS?

Yes, this is possible. On a Mac, go to System Preferences -> Sharing and enable "File Sharing." However, for stable operation, you may need to configure access permissions and use the SMB 2/3 protocol, as older versions of AFP may not be supported by newer Windows versions.

Why is the file transfer speed via WiFi low (less than 2 MB/s)?

Speed ​​may be limited by the frequency band. If you're using the 2.4 GHz band, actual speeds rarely exceed 3-4 Mbps due to interference. Switch your devices to the 5 GHz network for speeds up to 50-80 Mbps. Also, check your router settings for any restrictions.

Is it safe to keep sharing enabled all the time?

If you're on a home network behind a router with NAT, the risk is minimal. However, if you're connecting to WiFi at a cafe or hotel, always select the "Public Network" profile to hide your PC from prying eyes. Use strong passwords for your accounts on your home network.

How to find another computer's IP address?

On the target computer, open a command prompt (cmd) and enter the command ipconfigYou're interested in the "IPv4 address" line. It usually looks like 192.168.xx. This is the address you need to enter in Explorer for a direct connection.