Internet connection problem: what to do when you can no longer connect?

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Aina Martin
@ainamartin
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An Internet connection problem is preventing you from accessing the web. Such a situation can be irritating and come at the worst of times, when you need the Internet the most. What are the possible causes? The avenues to explore to resolve the failure? In this article, we list the most common issues that can cause you to be unable to access the Internet.

There are several factors that can prevent you from signing in to Internet, especially if you are using a PC running Windows 10. But it is not uncommon for all devices connected to the network to encounter A connection problem, in which case the first suspicion must be directed to the box or the modem. But the user does not always have control over the situation. If the Internet failure is not a serious problem on the ISP side, here are some ways to solve it.



Restart the PC and the box

This initiative works quite often in the event of a mild problem accessing the Internet. Check whether the other PCs or smartphones connected to the network have the connection. If this is the case, try to disconnect or reconnect to the WiFi network or by disconnecting and reconnecting the Ethernet cable if you are wired. If the problem persists, restart the device. Or restart the router if other devices also cannot access the web.

Release the local IP address

It happens very often that the router assigns the same local IP address to two devices connected on the same network, which causes an IP address conflict preventing the machine from connecting to the Internet. To solve the problem without restarting the computer or the router, you can use the IPCONFIG command from the Windows command prompt. In two stages:



  • Open the prompt and enter the command Ipconfig/release and validate. This will free all active TCP / IP connections.
  • Now enter the command Ipconfig/renew for assigning a new IP address

Internet connection problem due to Windows proxy

Some malware is obsessed with trying to prevent PCs from connecting to the Internet by changing Windows proxy settings. They often accompany software cracks downloaded from torrent sites or other questionable sources on the web.

  • Go to Windows Settings> Network and Internet. In the left menu, click proxy completely down
  • Check if the proxy is enabled and if 127.0.0.1 is entered in the Address field of the manual proxy configuration. Delete the content of the field, set the switch "Use a proxy server" to deactivate.

Try to go on the Internet from a browser again. If the problem persists, disinfect the whole PC with a good antivirus on the one hand, but also a good anti-malware software like Malwarbytes.

Check the firewall

The firewall plays a filtering role between all incoming and outgoing connections to your PC. It prevents certain unwanted applications or traffic from passing data between your computer and the Internet. Unfortunately, these software firewalls can malfunction and start blocking normal internet traffic.

When two firewall software such as Windows Firewall and a third-party product are installed on the same computer, conflicts between the two can cause an Internet connection problem. What to do is to temporarily turn off the system's firewall or your antivirus's firewall to determine if this is the cause of the problem. If some changes were made recently, try to undo them or restore the system to a previous state.



Try the network troubleshooter

The Windows Network Troubleshooter can be helpful in identifying the exact cause of a network connection problem. You can use it by accessing the Network and Sharing Center. Go to Control Panel and click Network and Internet> Network and Sharing Center). At the bottom, click Troubleshoot and follow the instructions.


DNS issues

DNS failures are very common on the operator side. When it becomes impossible to access the Internet in this case, the problem is easily workable by at least temporarily bypassing the ISP's official DNS. Google DNS, OPENDNS, Cloudflare, see our file on the best addresses. Once your alternative addresses have been chosen, change the DNS settings directly from your Internet box. The process varies slightly depending on the ISP and the box used.

The editorial advises you:

  1. How to configure Windows 10 firewall
  2. Windows 10: How to use the Remote Desktop feature
  3. iPhone: how to configure Internet connection sharing?
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