What is Flush DNS? How to Clear DNS Cache on Computers and Browsers

When accessing the website but encountering errors such as 404 Page Not Found good 502 Bad Gateway, most likely the cause comes from the DNS cache on the device. At this point, Flush DNS is a simple but extremely effective solution to handle this situation. So what is Flush DNS and how to do it? Together Antidetect Browser Hidemium ratherDiscover details below!

1. What is DNS Flush?

Flush DNS is the process of clearing the DNS cache on your computer. During the process of using the Internet, website IP addresses may change or be transferred to a new server. However, if the system still stores the old DNS information, access to the website may be interrupted, causing errors such as404 Page Not Found, even though the network connection is stable.

Flushing DNS helps your computer remove outdated DNS records and update the correct information from the current DNS server. This will help you access websites faster and smoother, while minimizing connection-related issues.

>>> Learn more: What is DNS 1.1.1.1? Easy guide to install & change DNS 1.1.1.1

2. What is DNS Cache?

DNS Cache (DNS cache) is a temporary storage of domain name resolution records on operating systems such as Windows or macOS. When a user visits a website, the browser sends a request to the DNS server to resolve the domain name (e.g. www.example.com) into the corresponding IP address – a format that computers can process.

Storing DNS information makes accessing familiar websites faster. However, if the records in the DNS Cache are no longer valid, users may encounter errors such as:

• DNS server isn’t responding

• dns_probe_finished_nxdomain

To ensure access performance, the system assigns each DNS record a certain lifetime, called TTL (Time-To-Live)During the TTL period, the device will prioritize fetching data from the DNS Cache instead of sending new requests to the DNS server – thus significantly improving web surfing speed.

Periodically clearing the DNS Cache helps the system remove old records, update the latest information, and promptly fix common access errors.

>>> Learn more:How to Fix "Network Blocking Encrypted DNS" Error on iOS

3. Why should you perform DNS Flush regularly?

DNS Cache is a temporary storage of DNS entries until the TTL (Time To Live) expires. However, not clearing the cache periodically can cause many problems related to security and access performance. Here are three important reasons why you should be proactive Flush DNS regularly:

3.1 Enhance your privacy while browsing the web

DNS Cache can be a tool to track user behavior, similar to JavaScript or Cookies. In case of unauthorized access, hackers can exploit the data stored in the cache to collect personal information and your browsing history.
 Job Clear DNS Cache Periodically Is a simple yet effective solution to minimize the risk of information leakage, while protecting privacy when accessing the Internet.

3.2 Prevent DNS Spoofing Attacks

If the DNS Cache is compromised, an attacker can modify DNS records to redirect users to malicious, spyware, or phishing sites. This is especially dangerous if you are accessing financial services or making online transactions.

Clear DNS Cache on Windows Or other operating systems that help eliminate potentially tampered records, keeping your connection sessions secure.

3.3 Quick Access Troubleshooting

Some problems accessing websites can be caused by outdated or incorrect records stored in the DNS Cache. This causes the domain name to point to an incorrect IP address, resulting in page loading errors or displaying outdated content.

Flush DNShelps refresh the connection between the operating system and the DNS server, thereby restoring stable access.
To check the records stored in the DNS Cache on Windows, you can open Command Prompt and enter the command:ipconfig /displaydns.

>>> Learn more: What is Chrome net internals DNS? How to clear DNS cache in Chrome

4. Instructions to Flush DNS Cache on your computer to increase speed and security when accessing the Internet

Regular work flush DNS cache helps improve Internet access speed, fix website display errors and enhance security when surfing the web. In this article,Hidemiumwill guide you in detail how to xóa DNS cache (clear DNS cache)on two popular operating systems today: macOS and Windows.

4.1 How to Clear DNS Cache on macOS

For users to use Mac, you can perform the operation clear DNS cache follow the steps below:

• Step 1:Press the key combinationCommand + Space To open Spotlight Search.

• Step 2:Type the keyword “Terminal” and open the application Terminal in folder Other belong to Launchpad.

Step 3:In the Terminal window, type the following command and press Enter:

• Step 4:Enter the administrator account password when prompted.

• Step 5:After entering the correct password, the system will proceed flush DNS cache without displaying any further messages. This means the operation was successful.

4.2 Instructions for Clear DNS Cache on Windows

With operating system Windows, you can do flush DNS cache quickly through the following steps:

• Step 1:Press the key combinationWindows + To open the dialog box Run.

• Step 2:Type the following command and press Enter:

  

• The system will display a message confirming that the DNS cache has been successfully cleared.

• Step 3: Open browser Google Chrome, press Ctrl + To move the cursor to the address bar.

• Step 4:Type the following path and press Enter:

  

• Step 5: In Chrome's DNS management interface, click Clear host cache to delete the entire list of websites visited.

• Step 6: Continue selecting Close idle sockets and Flush socket pools to close existing network connections, ensuring the system works with the latest DNS data.

Benefits of Flushing DNS Periodically

Job-clearing DNS cache Regularly not only helps increase website access speed but also prevents incorrect IP address access due to old data, thereby improving web surfing experience and user information security.

5. Instructions on how to Flush DNS Cache on popular browsers

Besides clearing the DNS Cache on your operating system, you should also perform the following operation Flush DNS Cache Right in browsers like Chrome, Firefox or Coc CocThis helps to effectively fix errors when accessing the Internet such as 404 Page Not Found, 502 Bad Gateway, while improving page loading speed and enhancing stability during use. Below are detailed instructions on how to clear DNS Cache on each browser.

5.1 How to Flush DNS Cache on Google Chrome

For users Google Chrome, the steps are as follows:

• Step 1: Click on the icon with three vertical dots in the upper right corner of the browser.

• Step 2: Select “More tools”→ continue pressing “Clear browsing data”.

• Step 3:At the section Time range, select the appropriate time period → select the types of data to delete → press “Clear data”.

📌 Note:To delete deeper like Cookies and browsing history, you can switch to the tab “Advanced” for more detailed customization.

5.2 How to clear DNS Cache on Firefox browser

If you are using Mozilla Firefox, you can perform Flush DNS Cache by following these steps:

• Step 1: Open your browser and type about:preferences #privacy in the address bar to access the privacy settings page.

• Step 2: Scroll down to the item “Cookies and site data”→ click “Clear Data…”.

• Step 3:Check “Cached Web Content” → press Clear to complete.

5.3 Instructions for Flush DNS Cache on Coc Coc browser

For users Coc Coc, the steps are similar to Chrome:

• Step 1:Open browser → press key combination Ctrl + To open browsing history.

• Step 2: Press “Clear browsing data”, select Time range, then press Delete data to complete.

Conclude

Here are detailed instructions on how to Flush DNS Cache on Chrome, Firefox and Coc Coc browsersThis not only helps you quickly fix common access errors but also improves browser performance and security when surfing the web.

If you are using Hidemium - an anonymous browser that supports account maintenance, automatic script running and digital identity protection, don't forget to regularly clear DNS Cache to ensure optimal performance.

📩 Any questions about how to use Hidemium, Please contact us for the fastest and most detailed support!

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