That a computer or mobile device displays the message “Unable to connect to the Wi-Fi network” Just when you need the internet the most, it's one of those things that drives anyone crazy. And when the connection fails... the 5 GHz band (the fast one), the feeling of throwing money away on fiber and routers is even greater.
The good news is that, in most cases, this problem can be fixed if you follow a logical order: check compatibility, check your router, adjust Windows or your mobile device, try a couple of advanced options, and only as a last resort should you consider changing your device. Below you will see 5 definitive and very complete solutions to fix the "Could not connect to the Wi-Fi network" error when the 5 GHz network is to blame.
What is the 5 GHz Wi-Fi band and how is it different?
Today, almost all routers installed by internet service providers are from dual-band Wi-FiThat is, they broadcast simultaneously in 2,4 GHz and 5 GHzSometimes you'll see two different network names (for example, "Fiber" and "Fiber-PLUS"), and other times only one SSID because the router uses what's called a network name. Smart WiFi or Band Steering.
The band 2,4 GHz It's the same as always: greater range and better wall penetrationbut less speed and more interference, because it is used by countless devices (other routers, home automation, Bluetooth, etc.).
The band 5 GHz It is the modern one: it offers much faster speed and less interferenceHowever, in return, the signal doesn't reach as far and is more affected by obstacles like thick walls or concrete. It's ideal when you're relatively close to the router and want squeeze the fiber to the maximum. for online gaming, watching 4K content, or working remotely with video calls.
It's important to clarify something that generates a lot of doubt: Mobile 5G is not the same as 5 GHz Wi-Fi5G is a mobile data technology from your carrier, while the 5 GHz band is a frequency used by your home Wi-Fi router. They sound similar, but they're completely different.
Solution 1: Check if your devices support 5 GHz Wi-Fi
Before going crazy with the setup, the first thing to do is confirm that the device is actually compatible with 5 GHz Wi-Fi networksIt seems obvious, but in older or very basic computers it's a fairly common mistake.
A device is compatible with 5 GHz if it supports standards such as 802.11a, 802.11n (dual band), 802.11ac (Wi-Fi 5), or 802.11ax (Wi-Fi 6)If you only see 802.11b/g, you have a device limited to 2,4 GHz and there is nothing to be done except change the network card or the device.
Check compatibility in Windows
On a Windows PC, you can easily check if your network card supports 5 GHz by running a simple command. This check is crucial when you see a 5 GHz network but consistently encounter an error. “You cannot connect to this network” or it never even appears.
Step by step in Windows:
- Open the Start menu and writes cmd o Symbol of the system.
- Right click and choose Run as administrator.
- In the black window, type: netsh wlan show drivers and press Enter.
In the command output, look for the section that says “Supported radio types”If only 802.11b, 802.11g, and 802.11n appear, without mentioning 802.11ao or 802.11ac/ax, that card only works at 2,4 GHz. However, if you see 802.11ao 802.11ac/axThis means that it can use the 5 GHz band, and therefore the problem lies elsewhere.
Another way is to go to Device administratorGo to the Wi-Fi adapter properties and check the details or advanced options tab. On modern computers, this is almost always the case. Intel Wi-Fi 5 or Wi-Fi 6 cards capable of handling 5 GHz without any problem.
Check compatibility on mobile phones, tablets, and other devices
On mobile phones, televisions, consoles or tablets, the easiest thing to do is look at the Technical specifications on the manufacturer's website or in the box. You need to find something like “Dual band Wi-Fi”, “802.11ac”, “Wi-Fi 5” or “Wi-Fi 6”If nothing related to 5 GHz appears, or you only see 802.11b/g, that device will remain locked at 2,4 GHz.
Muchos connected home devices (smart plugs, light bulbs, some appliances) work only on 2,4 GHzIt's completely normal that they never see the 5 GHz network, even if your router is broadcasting it correctly.
Solution 2: Check the router settings and the status of the 5 GHz network
With the device confirmed to support 5 GHz, the next suspect is the routerSeveral things can go wrong here: the 5 GHz network might be down off, hidden, incorrectly configured or broadcasting on channels that certain devices do not support.
Access the router settings
Most routers are managed by entering a web browser address like http://192.168.1.1 or similar. The key is usually on a sticker on the back or bottom of the device. Once inside, you'll find a section for Wi-Fi, wireless or wireless with options for the 2,4 GHz and 5 GHz bands.
Check if the 5 GHz network is enabled and visible
Within the wireless menu, check that the band 5 GHz is enabledYou'll usually see a checkbox labeled "Activate 5 GHz network" and another for the 2,4 GHz network. If it's disabled for any reason, it won't appear on any device, and it's normal to see the message. Unable to connect to the Wi-Fi network.
It is also common for the 5 GHz network to be hideMany routers allow you to select an option like "Hide SSID" or "Do not broadcast network name" for security reasons. In that case, you'll only be able to connect by manually entering the exact network name. To avoid problems, it's best to unhide the networkSave changes and wait for it to appear in the list of available networks.
Some models, especially those from carriers like Movistar, include a physical button for Wi-Fi Plus or Wi-Fi 5G on the back. If pressed accidentally, it can completely disable the 5 GHz band. Check the LEDs on the front of the router and, if in doubt, try restore factory settings and configure it again from scratch.
Network Name and Band Steering (Shared SSID)
There are routers that show two networks with different names (for example, MiFibra and MiFibra_PLUS), and others that work with a SSID only for both bandsIn this latter case, the router intelligently decides whether to connect you to 2,4 or 5 GHz depending on coverage and the device, which is known as Band Steering or smart WiFi.
If you want to force a specific device to always use the 5 GHz band, you will need to disable single SSID or Band Steering in the router's advanced settings. This will cause the device to display two different networks and you can manually choose which one to connect to.
On some routers, you can change the name of each band. It's recommended to use a different name. distinct and recognizable names (for example, "Home_2G" and "Home_5G") so you don't get confused and always know which band you are connected to on each device.
Broadcast channels and the problem with DFS channels
Another very common reason why a 5 GHz network doesn't appear or throws connection errors is the issue of... Wi-Fi channelsThe 5 GHz band uses several channel groups, but not all of them are equally compatible.
In general, a distinction is made between:
- Non-DFS channels (36, 40, 44, 48)They are free to use and the most compatible with all types of devices.
- DFS channels (from 52 to around 140)They share frequencies with weather or airport radar systems. By law, the router must scan the surroundings before transmitting and change channels if it detects radar.
The problem is that Many Wi-Fi adapters, especially older or cheaper ones, don't work well with DFS channels.If your router is broadcasting the 5 GHz network on channel 100, 112, 124, etc., your PC, mobile phone, or console may simply not receive the signal. don't see it or it randomly disconnects.
The solution is to go into the 5 GHz band settings and manually set the channel to 36, 40, or 44 48Avoid leaving it on "automatic" if you're experiencing these kinds of problems. After changing the channel, save the changes and restart your router so it starts broadcasting on the new frequency.
Wireless mode and supported standards
On some advanced routers you can choose the wireless mode of the 5 GHz band (for example, "ac/n mixed", "ax/ac/n", or even "Legacy"). In certain cases, after an operating system update (such as the jump from Windows 10 to Windows 11), some Wi-Fi cards become picky with very modern modes.
Some users have solved the "Unable to connect to this network" error on 5 GHz by changing the band mode to something more compatible, such as "Legacy" or "ac/n" Instead of using ax, or disabling very new features when the adapter is somewhat old. It's a quick test that costs nothing to do: you change the mode, apply the changes, and check if it finally connects.
Solution 3: Adjust Windows settings and automatic connection
If the router is properly configured and the 5 GHz network appears, the next step is to make sure that Windows is not forcing the 2,4 GHz band or using settings that hinder the connection.
Automatic connection and band selection
One very silly detail that causes a lot of headaches is the option “Connect automatically”If you have it activated on the 2,4 GHz network and not on the 5 GHz network, the PC will always connect to the slow band and will never switch on its own, even if you are right next to the router.
In Windows, open the list of Wi-Fi networks, select the 5 GHz network (usually ending in 5G or PLUS) and check the "Connect automatically" box. If you want to force it to always use that band, you can even forget the 2,4 GHz network so that it stops using it.
Prioritize the 5 GHz band from the Wi-Fi adapter
Some wireless cards allow, through their advanced features, give preference to a specific bandThis is especially useful when your router uses the same SSID for both 2,4 and 5 GHz and you want your PC to always try to use the faster one.
The general steps are these:
- Open the Device administrator (right-click on Start or find it in the menu).
- Unfolds Network adapters and locate your Wi-Fi adapter.
- Right-click, enter Properties and go to the tab Advanced.
- Look for a type option Wireless Mode, Preferred Band, Preferred band or similar.
- If possible, select the option that takes priority. 802.11ac/ax or that explicitly indicates 5 GHz.
This means that when there is sufficient coverage in 5 GHz, the device will tend to use this band instead of dropping to 2,4 GHz.
Uninstall and reinstall the network adapter driver
If the problem has appeared after a Windows update or when changing systems (for example, when going from Windows 10 to Windows 11), it is very possible that what is failing is the Wi-Fi card driver.
In this case, a very effective solution is completely uninstall the network adapter and let Windows reinstall the driver or install the latest version yourself from the manufacturer's website.
First of all, it is recommended to download the correct driver from another computer and save it in a USB and have it ready in case Windows doesn't install it automatically. You'll need to know brand and model of the adapter or the laptop/motherboard.
Steps to reinstall the adapter in Windows:
- Opens Device administrator.
- Unfolds Network adapters and locate the Wi-Fi card.
- Right-click and press Uninstall device.
- Check the box “Try removing the driver for this device” if it appears.
- Accept and, when finished, restart your computer from Start > Power > Restart.
When Windows starts up, it will try automatically install a compatible driverIf you do that and the problem disappears, great. If nothing installs or everything remains the same, use the driver you manually downloaded for your specific model.
Update drivers and operating system
keep both Windows, like updated Wi-Fi drivers This is key to avoiding incompatibilities with new security features (such as WPA3), changes in band management, new Wi-Fi 6 routers, etc.
On the router, the firmware It's also vital: many updates fix bugs in the management of 5 GHz channels, DFS channels, or Band Steering itself. On some models, you can check for updates from the administration panel; on others, you'll have to download them from the manufacturer's website and apply them manually.
Solution 4: distance, obstacles and interference
Although the 5 GHz band is faster, it doesn't work miracles. Its biggest drawback is that It has less range and is more sensitive to obstacles.Sometimes the network doesn't even appear in the list simply because you're too far from the router or there are too many walls in between.
As a general rule, if you move several rooms away from the router, it's quite likely that a device will lose connection to the 5 GHz network but remain connected to the 2,4 GHz network without any problems. In these cases, no matter how much you try to connect, you'll eventually see an error message. “Unable to connect to the Wi-Fi network” or constant outages.
To check if this applies to you, bring the device closer. as much as possible to the router and wait a few seconds. If the 5 GHz network appears and connects without problems, you know the bottleneck is distance or the layout of your house.
The following also have a significant influence obstacles and interferenceThick walls, metal structures, large appliances, microwaves, old cordless phones… Relocating the router to a most central and highest point and moving it away from devices that generate interference can completely change the behavior of the network.
If your home has many rooms or multiple floors, you might want to consider solutions like a Wi-Fi Mesh system or a higher-end router with technologies like Beamforming and MU-MIMOwhich better direct the signal and manage multiple devices simultaneously.
Solution 5: Advanced problems, cross-testing, and router replacement
Once you've checked compatibility, router settings, Windows configuration, and distance, it's time to fine-tune things a bit more. This final set of solutions is what makes the difference in the most stubborn cases.
Try using other devices to narrow down the problem
A simple and very useful trick is to check if the 5 GHz network It works well with other equipmentFor example, with your mobile phone, tablet, game console, or Smart TV that you know are compatible with 5 GHz.
If those other devices connect to the fast network without problems, the culprit is almost certainly the specific equipment that fails (your network card or its configuration). If, on the other hand, none of the household devices work well with the 5 GHz network, everything points to the router.
Wi-Fi and hidden network analysis software
There are programs like Acrylic Wi-Fi or other network analysis apps that allow you to see in detail all nearby networks, their bands, channels, and whether they are hiddenThey are very useful for detecting networks that your device is not showing for some reason or for checking if your router is using conflicting DFS channels.
These tools read the frames transmitted by the router, even if the SSID is hidden, and display information such as the exact channel, signal strength, and security type. This allows you to confirm if the 5 GHz network is actually present and what parameters it's using.
When is it not advisable to use the 5 GHz band?
Although it may sound strange, there are scenarios in which It's not a good idea to insist on the 5 GHz bandeven though it is theoretically faster. For example:
- When you are too far from the router and the signal is very weak.
- When there is many obstacles between the router and the device (several walls or thick walls).
- If you use very old devices which, even though they are theoretically compatible, manage this band poorly.
In these cases, it is usually more stable and practical to use the 2,4 GHz Bandwhich handles distance and obstacles much better, even if you have to sacrifice some top speed.
Contact your service provider or change your router
If after checking all these points the 5 GHz network is still giving you trouble, it is very likely that the problem lies within the device itself. your operator's router: faulty hardware, faulty firmware, or an outdated model that doesn't perform as it should.
In that case, the most sensible thing to do is call technical service from your company. They can usually remotely check the configuration, apply automatic changes, force firmware updates, and even send you a new router if they detect that yours is malfunctioning.
If your carrier doesn't offer you better equipment and you want to get the most out of your connection, you always have the option of buy your own mid-to-high-end neutral routerThe difference in coverage, stability, and speed between some basic operator routers and a good current model can be enormous, especially in large houses or houses with many walls.
Overall, if you follow these steps (check compatibility, thoroughly check the router, adjust Windows or mobile settings, consider distance and obstacles, and, if necessary, update drivers, firmware, or even the router itself), it's very rare for the error to occur. “Unable to connect to the Wi-Fi network” The problem persists when using the 5 GHz band. With a little patience and by addressing the key points, you should be able to enjoy a good connection again. Fast, stable Wi-Fi, well-tuned to your home. Share the information so that more people can learn to solve the problem.