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When browsing the web, encountering the site can’t be reached error message is one of the most frustrating experiences for any user. This issue, often accompanied by the diagnostic code net::ERR_CONNECTION_TIMED_OUT, indicates a critical interruption in communication between your browser and the destination web server. If you are using the Microsoft Windows operating system, the root cause of this anomaly frequently lies in a corrupted DNS (Domain Name System) cache, an incorrect local IP address assignment, or network socket conflicts.
According to official Microsoft documentation, the Windows DNS Client service caches resolved domain names to speed up future browsing. However, when a website’s DNS records change or the local cache becomes corrupted, the system can no longer correctly route data packets, generating the timeout error. In this definitive guide, we will explore step-by-step how to use command-line tools built into Windows, such as ipconfig and flushdns, to restore connectivity in minutes.
Before proceeding with the technical resolution of the problem, it is essential to ensure you have adequate permissions on the system. Changes to network parameters require elevated privileges.
To correctly execute network commands, follow these preliminary steps:
cmd in the search bar.The ipconfig command suite is the primary diagnostic tool provided by Microsoft for managing network interfaces. Executing the following commands sequentially will eliminate outdated data and request a new configuration from your router (DHCP server).
The first and most important step to resolve the connection error is flushing the DNS resolver cache. Inside the Command Prompt window, type the following command and press Enter:
ipconfig /flushdns
If the operation is successful, you will receive the message: “Windows IP Configuration. Successfully flushed the DNS Resolver Cache.” This forces Windows to query external DNS servers again the next time you try to access the website, bypassing any corrupted local records.
The next step is to tell your computer to abandon the IP address currently assigned by the router. Type:
ipconfig /release
Note: by executing this command, your internet connection will be momentarily interrupted. This is completely normal behavior and necessary for resetting the DHCP lease.
Now that the old IP has been discarded, you must request a new, clean one from your router. Enter the command:
ipconfig /renew
The system will take a few seconds to negotiate with the DHCP server. Upon completion, you will see a list of your network adapters with the new assigned IPv4 and IPv6 addresses.
As a final step of the ipconfig suite, it is advisable to force the registration of the DNS names and IP addresses configured for the computer. Type:
ipconfig /registerdns
If after running the ipconfig commands the browser continues to show the net::ERR_CONNECTION_TIMED_OUT error, the problem might lie deeper within the Windows network stack (TCP/IP) or the Winsock catalog (Windows Sockets API).
Winsock handles input/output requests for Internet applications in Windows. Changes made by malware, VPNs, or antivirus software can corrupt this catalog. To restore it to factory settings, type:
netsh winsock reset
To reset the basic Internet protocol, execute this final command:
netsh int ip reset
Warning: After running the netsh commands, it is mandatory to restart the computer for the changes to take effect. Save your work, close programs, and restart Windows.
If, despite the restart, you continue to encounter the inability to reach the site, as highlighted by Google Chrome support guidelines, the problem may not be local to your PC, but linked to your Internet Service Provider (ISP) or the browser itself.
Often, DNS servers provided by telephone operators are slow or outdated. Changing DNS to fast public ones can permanently resolve the problem:
Win + R, type ncpa.cpl, and press Enter to open Network Connections.ipconfig /flushdns again.Ensure there are no incorrectly configured proxy servers blocking traffic. Go to Windows Settings > Network & Internet > Proxy and ensure that the option “Automatically detect settings” is on and that the use of manual proxy servers is off. Additionally, temporarily disable any third-party VPNs to verify if they are the cause of the blockage.
The error that makes it impossible to reach a website on Windows is a common obstacle, but fortunately solvable in the vast majority of cases through tools built into the operating system. Flushing the DNS cache with ipconfig /flushdns, renewing the IP address, and resetting the network stack via netsh are the standard and most effective procedures recommended by IT professionals. Always remember to run these commands with administrator privileges and restart the system when requested to ensure the proper restoration of your connectivity.
This message indicates that the communication between your browser and the website server was interrupted by exceeding the maximum wait time. Often the problem is caused by a corrupted DNS cache or a local IP address incorrectly assigned by the home router. To resolve it, you need to reset the network parameters via the command prompt.
Flushing the DNS memory is useful when a website has changed servers but your system still tries to connect to the old locally stored address. This operation forces the operating system to request updated coordinates from external servers, immediately restoring correct web browsing. It is a safe procedure that does not delete users’ personal data.
The release command temporarily disconnects the device from the router to eliminate obsolete network data and prevent conflicts. This momentary disconnection is a fundamental technical step to allow the system to correctly negotiate and obtain a new clean address via the DHCP server. The connection will become active again as soon as the renew command is executed.
If the local network reset does not work, the blockage could depend on the internet provider or incorrect external settings. In these cases, it is recommended to change the default DNS servers by switching to fast public services like those of Google or Cloudflare. It is also useful to temporarily disable any active VPNs on the device.
Restarting the computer is essential because changes to basic Windows protocols and network APIs require a clean load of the operating system. Without this operation, the new TCP IP stack settings would not be applied correctly, leaving this connection error unchanged. Therefore, ensure you save every open document before proceeding.