Creating a wireless local area network (WLAN) is the foundation for comfortable use of digital devices in the home or office. Local area network It allows you to connect computers, laptops, smartphones, and printers into a single system, ensuring instant data exchange without the need for external internet connections. Today, it's more than just a way to transfer files; it's an essential infrastructure for a smart home and multimedia entertainment.
Many users mistakenly believe that simply connecting to a Wi-Fi router is enough for devices to "see" each other. In fact, default operating system security settings often block detection of nearby devices. WindowsFor example, by default, it treats new connections as public and hides your computer from prying eyes. To fully enable file sharing or a network printer, you need to properly configure the network profile and sharing settings.
In this article, we'll walk you through the entire process, from basic hardware checks to fine-tuning access rights. You'll learn how to avoid common mistakes and create a stable environment for transferring large volumes of data. The key point is a single IP range and the same working groupName for all network participants. Let's move from theory to practice.
Preparing equipment and checking connections
Before you begin setting up software, you need to ensure that your physical infrastructure is ready. All devices you plan to connect must be connected to the same wireless router. It doesn't matter whether you're using TP-Link, Keenetic or Asus, the principle of the unity of the environment of the devices remains unchanged.
Check that the Wi-Fi network adapter on each computer or laptop is active and the connection indicator is lit. If one of the devices is on a different subnet or connected via the router's guest mode, they won't be able to connect. Guest networks are specifically isolated from the main local network for security purposes.
- 📶 Make sure all devices are connected to the same access point (SSID), and not to extenders with different names.
- 🔌 Check signal stability: a local network doesn't require fast internet, but it does require a stable ping between devices.
- 🆔 Write down the IP addresses of your devices or make sure they receive them automatically through the router's DHCP server.
It's important to understand the difference between internet access and local network access. Even if the internet is disconnected by your ISP, your local Wi-Fi network will still function fully, allowing you to transfer files between computers. This is often overlooked when trying to "fix" the network by rebooting the modem.
Setting up a network profile in Windows
operating system Windows 10 And Windows 11 When you first connect to a new Wi-Fi network, you'll be asked if you want to make your computer visible to others. If you answered "No" or simply skipped this step, the system assigns the profile the "Public Network" status. In this mode network discovery disabled and the computer is hidden from neighbors via Wi-Fi.
To fix this, you need to change the network type to "Private." To do this, open the network settings from the taskbar or Start menu. In the network status section, find the name of your Wi-Fi connection and switch the profile. This will allow incoming connections and make the device visible in the list of available connections.
⚠️ Important: Only change your network type if you're in a trusted environment (home or office). In public places (cafes, airports), keep the "Public" profile to prevent attackers from scanning your open ports.
After changing the profile, the system will automatically apply a set of firewall rules allowing data exchange. However, sometimes manual activation of services is required. Go to Control Panel -> Network and Sharing Center -> Change advanced sharing settings. Here, enable network discovery and file sharing for the current profile.
Configuring folder and printer sharing
Once the devices have "seen" each other, you need to grant them access to specific resources. Simply sharing the entire C: drive is not possible and not necessary. Select individual folders, documents, or peripheral devices, such as printers or MFP.
To configure access to a folder, right-click it, select "Properties," and go to the "Sharing" tab. Click "Advanced" and check "Share this folder." You can also configure permissions here: allow read-only access or grant permission to modify and delete files.
☑️ Shared Folder Setup Checklist
Printer sharing is configured in a similar manner. Go to "Devices and Printers," select the desired device, open "Printer Properties" -> the "Sharing" tab, and enable sharing. This will allow you to print documents from any laptop or tablet on the network without having to connect a cable directly to each device.
There's an important nuance to access rights. By default, access may be granted to the "Everyone" group, which is convenient for a home environment but risky for an office. For a corporate environment, it's better to create local users with the same passwords on all machines or use domain authentication if available.
Mapping a network drive and connecting resources
Once resources are shared, you can connect to them. The most convenient way to work with frequently used files on a remote computer is network driveIt appears in My Computer as a regular hard drive partition (e.g. Z:), but the files are physically stored on a different device.
To connect, open "This PC," right-click on an empty space, and select "Add new network drive." In the window that opens, specify the path to the folder in the following format: \\ComputerName\Folder or \\192.168.1.50\DocsUsing an IP address is often more reliable, as computer names may not resolve correctly with DNS.
| Parameter | Description | Recommendation |
|---|---|---|
| Path | Network resource address | Use IP for stability |
| Drive letter | Logical name (Z:, Y:) | Choose letters at the end of the alphabet |
| Restore | Auto-connect on login | Enable for persistent folders |
| Other data | Use other credentials | It is necessary if user passwords are different. |
If the system asks for a username and password, enter the user account credentials for the computer where the folder is located. This often causes confusion: you log in as your user on the current computer, but the remote server asks for your password.
What should I do if the connection is lost after a reboot?
Often, the problem is that the router has assigned a new IP address to the server device. Go to the router settings and assign the IP address to the MAC address of the target computer (using Static DHCP or Address Reservation).
Using the SMB protocol and troubleshooting errors
The main file transfer protocol in Windows local area networks is SMB (Server Message Block)Modern versions of Windows 10 and 11 use SMBv2 or SMBv3 by default, disabling the outdated and insecure SMBv1. Visibility issues often arise when attempting to connect an older device (such as a NAS or TV box) to a new computer.
If you receive the error "Unable to access the network folder", check the services. Click Win + R, enter services.msc and find the services related to network discovery. They should be running and have the startup type set to Automatic.
⚠️ Note: Windows and router settings interfaces may be updated. If you don't find the described option, look for a similar function in the "Network and Internet" section or in your router's web interface under the names LAN Setup or Wireless Settings.
It's also worth mentioning the issue with passwords. Windows 10/11 has a policy requiring password protection for sharing. If you want to open folders without entering a password (only for home networks), you need to explicitly disable this option in "Advanced sharing settings" at the very bottom of the list.
For diagnostics, use the command line. Command ping will help check the physical reachability of the device. Enter ping 192.168.1.X (where X is the address of the target device). If packets are lost, the problem lies with the Wi-Fi signal or adapter drivers, not with the sharing settings.
Wireless network security and optimization
Open file access increases security risks, especially if your neighbors can access your Wi-Fi. Use a strong encryption protocol. WPA2/WPA3 on the router. Never leave the network open (without a password) if files are being forwarded through it.
To optimize the transfer speed of large files (4K video, backups), consider using the 5 GHz band. It is less noisy and provides higher throughput, which is critical for SMB protocol. However, its range is shorter than that of 2.4 GHz.
- 🔒 Regularly change passwords for user accounts that have access to shared resources.
- 📡 Separate your guest network from your main network on different frequencies or SSIDs to prevent visitors from accessing your personal data.
- 💾 Make backup copies of important data, even if it is stored on a network drive, as hard drives tend to fail.
Setting up a local Wi-Fi network is a process that requires attention to detail, but the results are worth it. You get a flexible data storage system accessible from any device in the home and the ability to share expensive peripherals.
Why can't my computer see other devices on the network?
Most likely, the devices have different network profiles (one "Private," the other "Public") or are on different subnets. Also, check if Network Discovery is enabled in the Network and Sharing Center.
How to transfer a file larger than 4 GB over the network?
The file system must support large files (NTFS). The SMB protocol doesn't have a 4GB limit, unlike FAT32 on flash drives. Make sure the receiving drive has enough space and is configured for NTFS.
Is it possible to set up a network between Windows and macOS?
Yes, this is possible. On a Mac, you need to enable "File Sharing" in System Preferences and use the SMB protocol. When connecting from Windows, use the Mac's IP address.
Will a local network slow down my internet speed?
No, local traffic flows within your network and doesn't affect your ISP's bandwidth. However, if you're simultaneously downloading torrents and copying files over Wi-Fi, the wireless channel may become overloaded, causing a drop in speed on both ends.