Facebook, a widely-used social network for connecting with friends and family, may sometimes face restrictions. Your computer might be unable to access Facebook on web browsers for various reasons.

This article shares effective solutions to help you easily access Facebook even when blocked, without the need for any software.
1. Install an Add-On for Facebook on the Google Chrome browser.
Step 1: Visit the Chrome Web Store online at https://chrome.google.com/webstore and search for the Access-Facebook extension by entering the keyword unblock facebook in vietnam and pressing Enter.

Step 2: In the Access-Facebook extension, click on Free.

Step 3: Wait for the browser to verify, and when the browser prompts Confirm new extension, select Add.

Once the Added text appears on the extension, you have successfully added the extension to the browser, enabling you to access Facebook.
2. Đổi DNS để vào facebook.
Để thay đổi DNS các bạn thực hiện như sau:
Step 1: You can left-click or right-click on the network icon in the Taskbar, then choose Open Network and Sharing Center.

Step 2: Next, select the network icon of the computer in use.

Step 3: Choose Properties.

Step 4: Next, select Internet Protocol Version 4 (TCP/IPv4) under This connection uses the following items and choose Properties.

Step 5: When Internet Protocol Version 4 (TCP/IPv4) Properties appears, in the General tab, choose Use the following DNS server addresses. Then enter the following numerical values:
Preferred DNS server: 4.2.2.3
Alternate DNS server: 4.2.2.4

After that, press OK to save the settings. Now you have successfully changed the DNS, and you can easily access Facebook.
3. Modify the Hosts file for quick Facebook access.
Step 1: Open Windows Explorer and go to the folder containing the hosts file at: C:\Windows\System32\drivers\etc

Alternatively, you can quickly access by pressing the Windows + R key combination to open the Run dialog and enter the command C:\Windows\System32\drivers\etc, then press Enter.

Step 2: Right-click on the hosts file and choose Open -> Notepad. Then, copy the latest hosts entries for Facebook as follows:
173.252.110.27 facebook.com
173.252.112.23 www.facebook.com
173.252.112.23 login.facebook.com
69.171.242.27 upload.facebook.com
66.220.152.19 graph.facebook.com
173.252.101.48 pixel.facebook.com
173.252.100.27 apps.facebook.com
Afterward, paste it at the end of the hosts file and click Save.

Note: If the hosts file cannot be saved, close Notepad, copy the hosts file to the desktop, open the hosts file with Notepad, add the modified hosts entries for Facebook, and save it. Then, copy the edited hosts file and replace the original in the etc folder.
Above are some methods to help you access Facebook when blocked. Choose the most suitable method for you. Wish you success!
