If you are a Windows user, when you encounter an error “This site can't be reached” (This site can't be reached) on Chrome browser, you will probably immediately think about losing network connection and immediately apply the solution to fix network outage error with troubleshooter. However, troubleshooting with this solution only focuses on scanning basic problems such as the connection between the server and the computer, but does not check DNS issues to actually solve the problem.
In the article below, Network Administrator will guide you through 4 ways to fix the error “This site can't be reached” (This site can't be reached) on Chrome browser.
1. Restart DNS client
Follow the steps below to get started DNS Client:
Step 1: Press the key combination Windows + R to open the Run command window, then enter services.msc Go there and press Enter to open the window Services.
Step 2: On the window Services, Scroll down to find the item named DNS client.
Step 3: Right click DNS client and choose Restart.
Step 4: Right now DNS client Your device will reboot. After rebooting, check to see if the error still exists.
2. Change IPv4 DNS address
Step 1: Right-click the network icon in the system tray and then click select Open Network and Sharing Center.
Step 2: On the window Network and Sharing Centerclick on the network you are connecting to, select Properties.
Step 3: On the window Wifi Properties, Find and click to select Internet Protocol Version 4 (TCP/IP)then click select Properties.
Step 4: Select tick Use the following DNS server addresses.
Step 5: Enter the address below into the box Preferred DNS server and Alternate DNS server respectively:
Preferred DNS Server: 8.8.8.8
Alternate DNS Server: 8.8.4.4
Step 6: Select tick Validate settings upon exit then click select OK and close the window.
Step 7: Finally check if the error still exists or not.
In addition, readers can learn more about how to change DNS usage to surf the web faster here.
3. Reset TCP/IP
Step 1: Right-click the button Start in the bottom left corner of the screen, click select Command Prompt (Admin).
Or alternatively, press a key combination Windows+X, then click select Command Prompt (Admin).
Step 2: On the window Command Prompt, Enter each command below one by one::
ipconfig /release
ipconfig /all
ipconfig /flushdns
ipconfig /renew
netsh int ip set dns
netsh winsock reset
Step 3: After executing the commands, restart your computer and check to see if the error still appears.
4. Run Network Troubleshooter to troubleshoot network problems
Step 1: Press the charge combination Windows + R to open the dialog box Run.
Step 2: Enter inetcpl.cpl into the command window Run then press Enter.

Step 3: Right click on the Wifi Connection you are using and select Diagnose.

Step 4: Let the Network Troubleshooter run and if notified DHCP is not enabled for “Wireless Network Connection” then perform the following steps to fix the error.

Step 5: Click Next to correct the error, continue clicking Try This Repairs as an Administrator.
Step 6: On the next prompt window, click Apply this Fix.
Step 7: Restart the computer to apply the changes and check if the “This site can't be reached” error persists or not.
5. Check the Automatically detect settings option
Step 1: Go to menu Internet Options in Control Panel.

Step 2: On the next window, you select the card Connections then click continue LAN Settings.

Step 3: Select Automatically Detect Settings then press OK.

Step 4: Ensure Use a Proxy Server for your LAN not selected, if it is selected, uncheck it.
6. Clear DNS cache (flush DNS cache)
Step 1: Enter Start, enter phrase cmd Go to the search bar to find it Command Prompt.
Step 2: On the window Command Prompt, Enter the command below and press Enter:
ipconfig /flushdns
Step 3: This command will clear the Windows DNS cache and fix DNS errors (if any).
Finally check to see if the error persists or not.
7. Disable Experimental Quic Protocol
Step 1: Open the Chrome browser on your computer.
Step 2: Next enter chrome://flags Go to the browser URL address bar and press Enter.
At this time, the list window appears on the screen Experiments available.
Step 3: Next find the item Experimental QUIC Protocol and click to select word drop-down menu option Disabled.
Step 4: Finally click the button Relaunch Now to apply changes.
8. DNS Prefetching
Step 1: Open the Chrome browser on your computer, then enter chrome://settings/ Go to the address bar and press Enter to open the window Chrome Settings.
Step 2: Scroll down the window Settingfind and select the option named Advanced to display advanced settings on Chrome browser.
Step 3: Next find and enable the option named “Preload pages for faster searching and browsing“. Choosing this setting will improve web load times.
9. Specific site can't be reached error
In some cases, some websites fail to load and display errors. To fix this error:
Step 1: Open the window Command Prompt by right clicking the button Startthen select Command Prompt from the Power User Menu.
Step 2: On the window Command Prompt Enter the command below and press Enter:
tracert www.sitename.com
Note: In the above statement, replace www.sitename.com with the website address where you encountered an error during the download process.
Step 3: If the ping is still running, but the website cannot be accessed, you need to immediately contact your Internet service provider (ISP).
10. Reset Google Chrome settings
Step 1: Enter chrome://flags/ Go to the Chrome browser address bar and press Enter.
Step 2: On the next window, find and click the button Reset all to default in the right corner of the screen and restart your Chrome browser.

Step 3: Finally, restart the browser to apply the changes and check if the “This site can't be reached” error still persists or not.
11. Reinstall Chrome browser
Step 1: Access Control Panel, then find and click to select Uninstall a program Then proceed to uninstall Chrome browser from your computer.
Step 2: Navigate to the following path and delete everything in the folder.
C:\Users\%your_name%\AppData\Local\Google\
Step 3: Download the latest version of Chrome browser to your device and install it.
Step 4: Restart your computer, then reopen Chrome browser to see if the error persists.
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Wish you success!