Before we go any further, we need to introduce you to the so-called universal WiFi fix:
With this simple fix, it’s possible to solve far more WiFi issues than you might expect. By waiting around 30 seconds after disconnecting your router from power, you give it enough time to dispose of all residual power stored inside capacitors, which are essentially small batteries that can keep the router’s CPU and memory ticking for some time.
As effective as the universal WiFi fix is, it won’t help you solve all WiFi issues you may encounter. The good news is that most other fixes that you can try are similarly straightforward.
Cause: If your WiFi is not working in certain rooms but working well in others, then it’s likely that your WiFi router is placed in a wrong spot.
Ideally, you want the router to be placed far away from any solid obstacles, such as furniture, large appliances, and thick walls. If possible, position it right in the center of your living space so that it can cover each and every room with an evenly distributed WiFi signal.
Instead of determining the optimal location without any data to support your decision, we recommend you perform a WiFi site survey using NetSpot. The purpose of a WiFi site survey is to visualize signal strength on a map so that you can quickly and easily see where you’ll likely have trouble connecting to your WiFi.
To perform a WiFi site survey using NetSpot, all you need is a laptop with Windows and macOS.
NetSpot will guide you through the entire process and help you gain a comprehensive understanding of your WiFi coverage.
Cause: Many issues with WiFi networks not delivering the expected download and upload speeds boil down to one thing: WiFi channel overcrowding.
The 2.4 GHz WiFi band is divided into 11 channels (at least in North America), but only channels 1,6, and 11 don’t overlap with another. Because there are effectively only three channels to choose from, what often happens is that multiple neighboring WiFi networks broadcast on the same channel, which becomes overcrowded and unable to deliver fast download and upload speeds.
To determine which of the three non-overlapping WiFi channels is used the least, you can run NetSpot in Discover mode. In this mode, NetSpot collects every detail about surrounding WiFi networks and presents wireless data as an interactive table.
Once you have located the least occupied channel, log in to your router’s admin interface, go to wireless settings, and tell your router to use it. Make sure to restart your router so that it starts broadcasting on the new channel. While you’re at it, you may also want to activate the 5 GHz WiFi band if your router supports it.
Cause: Random connection problems are often caused by faulty firmware or malicious software.
Before you call your internet service provider and ask, “Why is my WiFi not working?” check if your WiFi router is updated to the latest version. An unpatched router may be full of security vulnerabilities, and it’s possible that your issues with random connection drops are actually caused by hackers trying to exploit them.
If you’ve been using your WiFi router for some time, check when the last update was released. Many router manufacturers don’t support their product for nearly as long as they should, leaving their customers with unpatched devices and no way to secure them. Some routers are compatible with aftermarket firmware like DD-WRT or OpenWrt, but most low-end and mid-range routers that have stopped receiving updates need to be replaced with a newer model.
In addition to ensuring that your WiFi router is in the best shape possible, you need to eliminate the possibility that your internet connection is affected by malicious code on your computer. Included in Windows 10 is a capable antivirus called Windows Defender, and you should use it to scan your computer as well as all storage devices connected to it.
Cause: This problem is commonly caused by a corrupted DNS cache on your computer or router, whose purpose is to store all recently visited websites so they can be loaded quickly. First, test if you can connect to the internet by entering the following command in the Command Prompt (Windows) or Terminal (Mac):
If you see something like “Reply from 220.127.116.11: bytes=32 time=8ms TTL=114,” it means your internet is working. To flush your DNS cache on Windows, enter the following command in the admin Command Prompt:
To flush DNS cache on Mac, enter this command instead:
sudo killall -HUP mDNSResponder
Finally, you need to turn your attention to your router and apply the universal WiFi fix we’ve described at the start of this article to clear the router’s own DNS cache. You can then use the ping command again to verify that your DNS system is working as it should.
There are many possible answers to this question, which is why you should start by performing an in-depth analysis of your WiFi network using a wireless network analyzer like NetSpot.
There are several things you can do to fix your WiFi connection, and we recommend that you start by restarting your router. If that doesn’t help, then you need to follow the WiFi troubleshooting techniques described in this article to pinpoint the cause of the problem and resolve it.
If your WiFi is working everywhere else but not on your phone, then it’s likely that something is wrong with the phone itself. If you haven’t done so already, restart it and see if it helps. You can also delete information about the WiFi network and connect to it again from scratch.
Yes, it’s possible to have a working WiFi connection but no access to the internet. This usually happens when the internet service provider is experiencing technical issues or when there’s something wrong with the internet modem.