Organizing data exchange between devices in a home or small office is no longer the preserve of system administrators. In the era of digital archives, large video files, and distributed work, the need to quickly transfer information from one computer to another without the use of flash drives is becoming critical. Modern Wi-Fi router It's capable of not only distributing internet, but also acting as a full-fledged local traffic management center, linking laptops, smartphones, and desktop PCs into a single ecosystem.
Many users mistakenly believe that creating a full-fledged network requires cables, switches, and complex server hardware. In fact, wireless technologies of the 802.11ac standard and newer provide sufficient throughput for comfortable multimedia and document processing. The main thing is to properly configure the operating system software and ensure that devices can see each other over the air.
In this guide, we'll walk you through every setup step, from basic router configuration to the intricacies of setting up access rights in Windows. You'll learn how to protect your data from prying eyes and which settings to adjust for maximum transfer speed. A key factor for success is the identity of the workgroup on all connected devices; without this, computers simply will not detect each other in the network environment.
Basic equipment preparation and router testing
Before moving on to software settings, you need to ensure physical connectivity. All devices you plan to connect must be connected to the same wireless router. It doesn't matter whether you're using a guest network or the main one, as long as the IP addresses are assigned from the same subnet, which is usually the default when connected to a single access point.
Check the connection status on each computer. Make sure the Wi-Fi icon is active and shows internet access or at least a local connection. If one of the devices is too far from the router and the signal is unstable, file transfer speeds will be slow, and the connection may drop while copying large amounts of data.
An important step is checking the addressing. Each computer on the local network must have a unique IP address. At home, this task is performed by DHCP server, built into the router. You don't need to enter addresses manually unless you have specific requirements for static IP addressing for servers or network storage devices.
Setting up a network profile in the Windows operating system
By default, the Windows operating system blocks most network functions for security reasons, considering new connections potentially dangerous. When you first connect to a Wi-Fi network, it is classified as "Public," which hides your computer from detection by other users. To create a local network, you must change this status to "Private."
To do this, go to the Start menu and select "Settings" (the gear icon). Next, open "Network & Internet" and select "Wi-Fi" in the left menu. Click the name of your wireless network. In the properties window that opens, find the network profile switch and set it to "Private." This will make your computer visible to other devices within range.
☑️ Check network settings
After changing your profile, the system may ask for confirmation to allow discovery. Agree to this to open ports for local communication. If you are using an enterprise version of Windows, additional restrictions may be imposed by group policies, requiring intervention from a system administrator.
What should I do if my profile is not saved?
In some cases, antivirus software or third-party firewalls may force the network status back to "Public." Check your antivirus settings and add your home network to the list of trusted zones.
Enabling sharing and network services
Once the network profile has been changed, data sharing mechanisms must be enabled. Windows provides flexible tools for managing which resources are accessible to other users. This can include read-only access, full control, or password-protected access.
Open Control Panel, go to Network and Sharing Center, and select Change advanced sharing settings. Here you'll see several profiles (Private, Guest, All Networks). In the Private profile, make sure "Turn on network discovery" and "Turn on file and printer sharing" are enabled.
Pay special attention to the "All Networks" section. Here you'll find the important "Password-protected sharing" option. If you're in a secure home environment and want easier access, you can disable this feature. However, if you're likely to have strangers on your Wi-Fi network, it's best to leave it enabled so file access requires your Windows account login and password.
Don't forget to also check that SMB 1.0 support is enabled if you plan to connect older hardware, such as network media players or older printers. In modern versions of Windows, this protocol is disabled by default due to vulnerabilities, but for compatibility with older hardware, it may need to be enabled via "Turn Windows features on or off."
Selecting folders for sharing and setting permissions
Simply enabling network services isn't enough—you need to specify which folders or drives will be shared. You can grant access to a specific folder containing documents, photos, or even an entire hard drive partition. Access rights allow you to flexibly control who can read files and who can modify or delete them.
To configure settings, select the desired folder, right-click it, and select "Properties." Go to the "Sharing" tab and click "Advanced." Check the "Share this folder" box. In the "Permissions" window, you can add specific users or the "Everyone" group and assign them full control, edit control, or read-only permissions.
| Permission type | Description of actions | Recommended use |
|---|---|---|
| Full access | Reading, writing, modifying, deleting files | For personal folders on trusted PCs |
| Change | Read, write, delete, but without changing access rights | For project working folders |
| Reading | View and copy files only | For media libraries or archives |
| Special rights | Fine-tuning specific operations | For experienced users |
There's also the "Quick Access" or "Shared Access" method, which is simpler but less flexible. It automatically opens the folder to all network users with basic permissions. For a home network, this is often sufficient, but for more organized workflows, it's better to use advanced settings with specific user assignments.
When assigning permissions, it's important to remember inheritance. If you share the root folder, all subfolders and files will also be accessible unless they have individual restrictions. This could lead to unintentional data leakage if you accidentally share a system folder or a folder containing personal photos instead of your working directory.
Mapping a network drive and working with resources
When folders are shared, accessibility becomes a concern. Constantly searching for computers in a networked environment is inconvenient, especially if you frequently need file paths. Windows allows you to mount a remote folder as a local drive by assigning it a drive letter (e.g., Z:). After this, working with network files will be no different from working with files on your hard drive.
To connect, open "This PC," right-click on an empty space and select "Add new network drive," or use the "Map network drive" button on the top panel. In the window that opens, select an available drive letter and specify the path to the folder in the following format: \\ComputerName\FolderName or \\IP Address\FolderName.
How to find another computer's IP address?
Open the command prompt on the target computer (Win+R, enter cmd) and enter ipconfig. Find the IPv4 address line—this is the address you need.
If you've disabled password protection, the drive will mount automatically. Otherwise, the system will prompt you for credentials. Important: The login and password must match those set on the computer where the folder is located. If the remote computer doesn't have a password, Windows may block the connection for security reasons, requiring one to be set.
Using an IP address instead of a computer name is often more reliable, as DNS resolution can be slow or error-prone, especially in mixed networks with devices from different manufacturers. A static IP address for the file server (the computer hosting the shared folders) will eliminate issues with disk reconnection after a router reboot.
Typical problems and methods of their diagnosis
Despite its apparent simplicity, the setup process can encounter technical obstacles. Most often, issues are related to the Windows Firewall, which blocks incoming connections, or incorrect service settings. Understanding the nature of the errors will help quickly restore network functionality.
One common issue is the error "Windows cannot access...." This can occur if both computers have the same name. Ensure that each computer on the network has a unique name. Also, check that the required services are running: Function Discovery Provider, SSDP Discovery Service, and Discovery Provider Host.
⚠️ Warning: If you're using a third-party antivirus (Kaspersky, ESET, Avast, etc.), its built-in firewall may block your local network, even if your Windows settings are correct. Temporarily disable your antivirus's firewall to test it, or add your Wi-Fi network to the trusted list in the antivirus interface.
Another common scenario is when computers see each other but are unable to connect. This is often resolved by enabling SMB 1.0 support (as mentioned earlier) or checking the "Function Discovery Resource Publication" service. Also, make sure that Wi-Fi Client Isolation is not enabled in your router settings—this feature prevents devices connected via Wi-Fi from communicating with each other.
For diagnostics, use the built-in command line utility. Try pinging another computer: ping 192.168.1.XX (where XX is the target PC's address). If ping works, there's a physical connection and the problem lies with the software access settings. If there's no ping, the problem lies with the network, router, or firewall.
Questions and Answers (FAQ)
Is it possible to create a local network if one computer is connected via cable and the other via Wi-Fi?
Yes, this is possible and is a common situation. The main thing is that both devices are connected to the same router and are on the same subnet (receiving addresses from the same DHCP server). A wired connection is even preferable for a computer acting as a file server, as it provides more stable speeds.
Why is my computer not visible on the network even though all the settings are correct?
Most often, the cause is a network profile ("Public" instead of "Private") or a stopped "Feature Discovery Provider" service. Also, check if your antivirus software is blocking the connection. Try rebooting the router and both computers after making changes to the settings.
Is it safe to share folders over Wi-Fi?
Security depends on the security of your Wi-Fi network. If you have a strong Wi-Fi password (WPA2/WPA3) and use password protection for shared folders, the risk is minimal. It is not recommended to use shared folders without a password if unauthorized people have access to your Wi-Fi network.
How to increase file transfer speed over a local network?
Speed is limited by the router's Wi-Fi standard and antenna power. For maximum speeds, use the 5 GHz band (802.11ac/ax standards). Make sure both devices support this band. Speed may also be limited by the performance of the computer's hard drive from which data is being read.