Establishing a local connection between two PCs without a router is a challenge faced by many users who want to quickly transfer gigabytes of data or play local games. Direct connection Using a wireless module, you can create a temporary computer-to-computer infrastructure, known as an ad-hoc network, or use built-in Windows features to share the internet. This solution is ideal for situations where a router is not available and a wired connection is impossible.
In modern Microsoft operating systems such as Windows 10 And Windows 11The process of creating such an access point is significantly simplified compared to previous versions. You don't need to install third-party software or delve into deep system registries to set up basic file sharing. However, there are important security and driver compatibility nuances that must be considered to ensure stable operation of the communication channel.
In this article, we'll take a detailed look at how to set up a WiFi network between two computers, ensuring maximum transfer speeds and protecting data from unauthorized access. We'll cover both standard OS tools and alternative methods that can be useful if standard protocols fail.
Equipment preparation and compatibility testing
Before you begin software configuration, you need to make sure that your hardware supports the required operating modes. Wireless adapter Each computer must support Ad-Hoc mode or the "Internet Sharing" feature. Most modern laptops and USB dongles support this feature by default, but older models may be limited to client mode only.
Check the driver status in Device Manager. If a yellow exclamation mark appears on the device, the connection will fail. It's also important to ensure both computers have the latest drivers from the chipset manufacturer installed, as standard Microsoft drivers sometimes handle bridged modes incorrectly.
⚠️ Note: Some corporate security policies or antivirus software may block the creation of virtual adapters. If you are working on a work laptop, make sure you have permission to change network interface settings.
Frequency range also matters. If one computer only operates in the 2.4 GHz band and the other tries to force 5 GHz, they may not recognize each other when connected directly. In such cases, the system will automatically switch to the most compatible standard, but speed may drop.
Creating a Wireless Ad-Hoc Network in Windows
The most classic way to set up a connection is to create a computer-to-computer network. In Windows 10 and 11, this process is more hidden than in Windows 7, but it's still accessible through the command line or mobile hotspot settings. The first computer will act as hosta, which creates the network, and the second one connects to it as a client.
To get started, open Network & Internet settings. Go to the "Mobile Hotspot" section. Here you can set the network name (SSID) and password. This is the simplest method and doesn't require entering any commands. Make sure your primary internet connection or local network is selected under "Sharing," depending on your needs.
☑️ Pre-launch check
An alternative, more flexible method is to use the command prompt with administrator rights. Run cmd and enter the command to create a virtual adapter. This allows you to set specific parameters not available in the graphical interface.
netsh wlan set hostednetwork mode=allow ssid=MyLocalNet key=SecurePassword123After creating the network, you need to start it with the command netsh wlan start hostednetworkOn the second computer, the connection you created will appear in the list of available wireless networks. Enter the password, and the connection will be established.
Setting up file and printer sharing
Simply connecting computers via WiFi isn't enough—you need to allow them to see each other's resources. By default, Windows blocks PCs from being discovered on public networks for security reasons. You need to change the network profile from "Public" to "Private."
Open "Network and Sharing Center" and select "Change advanced sharing settings." Here you need to enable network discovery and "File and Printer Sharing." Without these steps, the computers will be physically connected but logically isolated.
| Parameter | Private network | Public network | All networks |
|---|---|---|---|
| Network discovery | Included | Disabled | - |
| File sharing | Included | Disabled | Depends on the setting |
| Access to media files | Included | Disabled | - |
| Password encryption | Included | Included | Requires a password |
It's also worth paying attention to the sharing settings for specific folders. Right-click the folder, select "Properties" → "Sharing" → "Advanced." Make sure the access rights are set correctly for the user. Everyone or a specific network user.
Troubleshooting connection and visibility issues
It often happens that a network is created, but the second computer cannot see it or cannot obtain an IP address. The main reason is IPv4 protocolMake sure that the wireless adapter properties on both computers are set to obtain an IP address automatically (DHCP) if Windows is sharing the network.
If automatic configuration doesn't work, try manually entering static addresses. This eliminates DHCP server errors. For example, assign the first PC 192.168.100.1 and the second PC 192.168.100.2. The subnet masks must be the same: 255.255.255.0.
⚠️ Note: Menu interfaces and names may vary depending on your Windows build (Home, Pro, Enterprise) and installed security updates. Always check the current menu status on your system.
Another common issue is blocking the connection by the firewall service. Try temporarily disabling the firewall to test. If the connection is restored, you'll need to add an exception rule for "File and Printer Sharing" in the security settings.
What should I do if the "No Internet Access" status appears?
This is normal for a purely local network without access to the outside world. The main thing is that the ping between the computers works. If you need internet access, check "Allow other network users to connect through this connection" in the internet adapter properties.
Using third-party software for synchronization
If the built-in Windows tools seem too complicated or unstable, there are specialized snails. Programs like Hamachi or Radmin VPN create virtual local area networks over an existing connection, emulating a direct connection.
These solutions are often easier to set up for beginners, as they handle all the port forwarding and routing. Simply install the program on both computers and enter the same room code or login and password.
However, using third-party software places an additional load on the system and can reduce data transfer speeds due to traffic encryption. For transferring large amounts of data within an apartment, it's better to use native OS tools.
Optimizing connection speed and security
Ad-Hoc wireless connections typically use the 802.11g or n standard, which can limit speed. For maximum performance, ensure both adapters support the standard. 802.11ac or newer, although in direct communication mode this works less often.
Security is critical. Your WiFi password should be complex, as the signal's range may extend beyond your room. Use encryption. WPA2-Personal is a mandatory minimum.
Keep in mind that in hotspot mode, the host laptop's battery will drain significantly faster. If you plan to use the device for extended periods, connect it to a power source. Also, overheating the WiFi module during active data transfer may cause connection interruptions.
Frequently Asked Questions (FAQ)
Is it possible to connect a Windows computer and macOS directly via WiFi?
Yes, this is possible, but it requires manual IP address configuration, as automatic discovery between different operating systems doesn't work well. Create a network on Windows, and then connect to it on your Mac using a static IP address in the same subnet.
Why is file transfer speed via WiFi lower than via cable?
The wireless protocol has overhead for packet inspection and is susceptible to interference. Actual speed will always be lower than the adapter's theoretical speed due to signal loss and half-duplex operation.
Is it safe to leave a mobile hotspot on?
If you set a strong WPA2 password, the risk is minimal. However, keeping the hotspot constantly enabled unless absolutely necessary is not recommended, as it poses a potential vulnerability and drains battery life.
How to find out the IP address of a second computer on the network?
On the second computer, open a command prompt and type ipconfigFind the "IPv4 Address" line in the wireless adapter section. This is the address you need to enter in File Explorer to access files.