Analysis and solutions for some frequent problems with an internet connection, DNS, wifi, network sharing, and firewall.
READ ALSO -> Solutions for wifi and router connection problems
1) Computer connected but the browser does not work
The problem, in this case, can depend on two things: a firewall or another security program is blocking the connections from the internet browser; a problem with the TCP protocol which governs access to the network and prevents the DNS from functioning correctly.
In the first case, it is necessary to check your antivirus suite and disable it to see if the internet works. To disable an antivirus it should be sufficient to click on the icon at the bottom right and choose stop protection (even if only for a few minutes; if we use Windows Defender we invite you to read the guide How to Disable Windows Defender Antivirus in Windows 10.
In the second case, however, the solution is simpler than expected e a reset of the TCP / IP protocol might be enough using a specific program, as described in the guide Repair the internet connection.
In some cases the problem may be related to the browser itself; to restore it we can read the Guide to restore Chrome, Firefox, Edge to the initial state.
READ ALSO: If the PC is not connected to the internet, how to reset the network and web browsing
2) Set connection properties (Wi-Fi and Ethernet)
Windows allows you to connect to multiple networks at the same time, but when you go online, only one can be used. Basically, Windows 10 will give maximum priority to the cable network connection, but if we have other needs we can change the priority of the networks we have to do is click with the right mouse button on the menu Start, press on the Network connection, click on Change card options, right-click on the connection to change the priority, click on Property, to select Internet protocol version 4, press again on Property, click on the button at the bottom Advanced and finally remove the checkmark from the item Automatic metrics.
Once the check is removed, we assign a number in the field Interface metric to set the priority: we use the number 1 to assign the highest priority to the network card, then we repeat the steps for the other network cards present, assigning larger numbers (2, 3, etc.).
3) Internet not available with LTE key
If the LTE stick is old, it is possible that by now there are some malfunctions and that the time has come to change it with a new one, such as the Huawei E8372-153 USB Router.
If the LTE dongle is new or works fine on other computers, it may have lost the radio signal momentarily, so it is better to move or try again to a point near a window.
Only one PC does not connect to the Internet
The only computer that does not connect to the Internet may have problems with the system firewall: it is better to try restarting the computer or change the firewall with a third party.
In other cases, the problem might relate to the configuration of the Wi-Fi network. We, therefore, recommend trying an ethernet (cable) connection which is more stable and should work. Since you are certainly accessing the internet via a router, try to access the router by typing the local address in the address bar of the browser (192.168.1.1 in most cases) and see if it connects.
Very often the problem can be related to server DNS. We can then try to solve this by modifying them and using the Google public DNS which are certainly functional at any time of the day. To change them, we advise you to read our guide Change DNS server in Windows 10 connection settings.
5) The PC does not connect to other computers on the network
On all recent versions of Windows for security reasons it is not possible to see the devices present in the same network if it is set as a Public network. The public network is recommended for hotspots around the city or to connect to a new network that we do not know, but at home, we must make sure to set how Private network the Wi-Fi connection active at that time.
The proceeding is really simple: click on the network icon at the bottom right, select the active Wi-Fi network, click on Properties, and put the checkmark on Private in the section Network profile.
In another article, we have seen how to change the public network and set it to private or home.
6) How to use Windows Network Recovery
If the advice seen above did not solve the connection problem, we can always try the network reset integrated into Windows 10, so as to quickly diagnose the problem and solve it.
To use it, press the right button on the Start menu, select Network connections, and press on Network troubleshooting. We await the end of the diagnostics and the attempts to restore the system so that we can regain a perfectly working connection (in most cases).
READ ALSO: I can’t connect to the internet; guide causes and solutions
While Windows is often the problem with network connections (and we’ve shown you how to fix them above), we shouldn’t underestimate other important aspects that can compromise your network connection and wireless connections: interference with nearby networks and the type of Wi-Fi network used for the connection. In this regard, to learn more about these problems, we recommend that you read the guides Differences between 2.4 GHz and 5 GHz Wi-Fi networks; which is better? e Add 5GHz WiFi for PC, for faster connection.
If, on the other hand, the connection problems occur with the connection via an Ethernet cable, perhaps it is better to choose a higher quality cable, as seen in the article Differences between Ethernet cables, CAT5, CAT6, CAT7, CAT8 and which ones to use.
Obviously, if nothing solves and if