How to set up file transfer between computers via Wi-Fi

Modern users often need to transfer large files, photo folders, or document backups between multiple devices within a single apartment or office. Using USB drives becomes slow and inconvenient, especially when data needs to be synchronized regularly. A local area network built using a wireless connection Wi-Fi, allows you to forget about physical media and cables.

Organizing such data exchange does not require in-depth programming knowledge, but it does require precise adherence to instructions for setting up access rights and network parameters. Windows Provides built-in tools for this task, hidden deep within system utilities. Proper configuration transforms disparate computers into a unified working ecosystem.

In this article, we'll cover all the steps involved in creating a local network, troubleshoot common mistakes, and explore methods for ensuring maximum copy speed. You'll learn how to manage access to your resources and understand the principles of network protocols. This knowledge is essential for every digital device owner.

Preparing equipment and checking the network

Before configuring the software, you must ensure that the physical connection is functioning correctly. All computers involved in data exchange must be connected to the same router. This is a fundamental requirement, without which further steps are meaningless.

Check if it is active Wi-Fi adapter On each device. Sometimes users forget that one laptop can be connected via cable and the other via wireless, which is perfectly fine within a home network, but requires both devices to be on the same subnet.

• 📶 Make sure the wireless indicator is on on all devices.
• 🔌 Check that all PCs are connected to the same access point (SSID).
• 🔑 Make sure you know the Wi-Fi network password to connect new devices.

It's important to understand that file transfer speed directly depends on the quality of the radio signal. If the router is located in the next room behind a thick wall, the transfer speed may be significantly lower than expected.

⚠️ Note: If your router supports dual-band mode (2.4 GHz and 5 GHz), try to connect all devices to the same frequency to ensure a stable connection, although modern routers usually correctly route traffic between bands.

⚠️ Note: Network adapter settings interfaces may vary depending on the driver version and Wi-Fi module model. If you don't see the described options, please refer to your hardware manufacturer's documentation.

Setting up network type and discovery

operating system Windows By default, new connections are considered public, blocking the device's visibility to others. To allow file transfers, you must change the network profile to "Private." This opens ports for local sharing.

To do this, go to the Start menu and select Settings. Then follow the path Network and Internet → StatusIn the connection properties section, click on the name of your Wi-Fi network and toggle the switch to "Private."

After changing your profile, you need to configure sharing settings. Open Control Panel, go to Network and Internet, then Network and Sharing Center. On the left, select Change advanced sharing settings.

In the window that opens, you'll see the "Private" and "Guest or Public" profiles. In the "Private" profile, you need to enable the following features:

• 🔍 Enable network discovery.
• 📂 Enable file and printer sharing.
• 🏠 Allow Windows to manage HomeGroup connections.

Don't forget to save your changes by clicking the "Save Changes" button at the bottom of the page. Without this step, your computer will remain invisible to other network users, even if the folders are configured correctly.

Creating a shared folder and setting access rights

Now that the network is set up, you need to determine what data will be available to other users. You can share any folder on the drive, but it's most convenient to use the default "Shared Documents" folder or create a new directory specifically for sharing.

Create a folder and give it a descriptive name, such as "Shared_WiFi." Right-click it and select "Properties." Go to the "Sharing" tab and click "Advanced."

Check the "Share this folder" box. Click "Permissions" below. This is where you create your security policy. For a home network, you can grant full permissions to the "Everyone" group, but for an office, it's best to restrict access to specific users.

It's also important to check the "Security" tab in the folder's properties. NTFS permissions must match the share permissions. If the "Everyone" username or specific account name isn't listed in the "Security" tab, the system may deny access, even if everything is shared publicly.

Once configured, the folder will be accessible over the network. Other computers will see it in the "Network" section of File Explorer. However, they may require login credentials.

⚠️ Caution: Granting full permissions (modify, delete) to the "Everyone" group will allow anyone connected to your Wi-Fi network to erase data. Use this method only in a trusted home environment.

Mapping a network drive and connecting

To avoid searching for a shared folder each time through "Network," it's best to mount it as a separate drive in "My Computer." This will create a permanent link to the resource on another computer, and it will appear in the list of local drives.

Open "This PC." In the top bar, click "Computer" and select "Map network drive." Select any available drive letter from the list (e.g., Z:). In the "Folder" field, enter the path to the resource in the format \\ComputerName\FolderName or \\IP Address\FolderName.

If you don't know the computer name, you can find it in the system properties. You can find the IP address by opening the command prompt and entering the command ipconfigLook for the line "IPv4 address".

C:\Users\User>ipconfig
Ethernet adapter Ethernet:
IPv4 address......: 192.168.1.55
Subnet mask.........: 255.255.255.0

When connecting, the system may ask for a username and password. Enter the account credentials for the computer where the folder is located. If you want the drive to mount automatically each time you log in, make sure "Reconnect at logon" is checked.

What to do if the connection fails?

The problem often lies in Windows services. Make sure the "Function Discovery Resource Publishing" and "Discovery Manager" services are running and in automatic mode.

Alternative methods of data transfer

Windows' default tools aren't always convenient, especially when you need to quickly transfer a file from your phone to your PC or between different operating systems. There are more flexible tools that work over Wi-Fi.

One of the most popular methods is using a protocol FTP or specialized software like Total Commander With the FTP Server plugin, you can transfer files at any speed supported by your router, without the limitations of the Windows interface.

Cloud storage and P2P synchronization are also worth mentioning. Programs like Resilio Sync or SyncTrayzor (a wrapper for Syncthing) creates a direct connection between devices over the internet or local network, instantly synchronizing changes in selected folders.

For one-time transfers of large files, utilities that create a temporary HTTP server are ideal. You launch the program, it provides a link, you open it on another device, and download the file. This is faster than setting up permanent access.

Solving typical problems and errors

Even with proper configuration, problems can still occur. Computers may not be able to see each other, or access may be blocked by antivirus software. Most often, the problem lies with the Windows Firewall, which blocks incoming connections.

Try temporarily disabling your firewall to test. If the network works after that, you need to add an exception to the rules. Search for "Windows Defender Firewall" and select "Allow an app."

Find "File and Printer Sharing" in the list and ensure all network types (Private and Public) are checked. Also, ensure "Support SMB 1.0" is disabled unless you have very old devices (such as Windows XP), as this protocol is vulnerable.

Another common error is an IP address conflict or incorrect DNS functionality. In such cases, resetting the network settings with the command netsh int ip reset in the command line launched as administrator, and then reboot.

Questions and Answers (FAQ)

Is it possible to transfer files between Windows and macOS over Wi-Fi?

Yes, this is possible. macOS supports the SMB protocol. On a Mac, open Finder, click "Go" → "Connect to Server," and enter the Windows computer's IP address (smb://IP address). On Windows, you'll need to allow guest access or create a user with the same login and password as on the Mac.

Why is the Wi-Fi transfer speed only 2-3 MB/s, even though the router is powerful?

Speed ​​may be limited by the 2.4 GHz band, interference from neighboring networks, distance from the router, or the Wi-Fi adapter in an older laptop. Speed ​​may also drop when running antivirus software that scans files in real time.

Is it safe to share a drive in a cafe?

Absolutely not. In public places, your network profile should always be set to "Public" and public access should be turned off. In a cafe, hackers can intercept your data or plant a virus in an open folder.

How to transfer a file if the computers cannot see each other?

Try using the IP address instead of the computer name in the File Explorer address bar. Also, make sure that Network Discovery is enabled on both computers and that they are in the same workgroup (usually WORKGROUP).