Clearing DNS Cache on Windows 10, 7, 8, XP Machines

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Ngày cập nhật gần nhất: 15/4/2026

Using DNS on Windows 10, 8, 7 often results in DNS Cache accumulation, slowing down your computer. Learn how to clear DNS cache for improved performance in our detailed guide below.

DNS is a critical system on computers, aiding greatly in internet connectivity and resolving internet errors. DNS, categorized into regular and fast types, may need adjustment if network restrictions block access to certain websites or social networks like Facebook. Opt for fast and reliable DNS to access blocked sites.

To expedite work processes, caches automatically store data and session information. However, prolonged inactivity leads to cache filling up your hard drive rapidly.

Step 1: Close all currently running software (Web browsers, Email…)

Step 2: Open the Windows command prompt by selecting the Start menu > All Programs > Accessories > Right-click on Command Prompt and choose Run as Administrator.

Step 3: The Command Prompt window appears, type the command “ipconfig /flushdns” and press Enter.

Immediately, the system begins to clear the DNS cache on Windows 7, with the message Successfully flushed the DNS Resolver Cache indicating completion.

2. Clear DNS Cache on Windows 10

Step 1: Right-click on the Windows icon in the bottom left corner of the screen and select Command Prompt (Admin).

Step 2: In the Command Prompt window, type the command “ipconfig /flushdns” and press Enter.

Step 3: This command will completely clear the DNS Cache, removing excessively large cache files, and you will receive a message Successfully flushed the DNS Resolver Cache after the system completes clearing the DNS Cache on Windows 10.

3. Clear DNS Cache on Windows 8

Step 1: Ensure that you are in Windows 8 Smart Screen mode.

Step 2: Type 'cmd' into the Windows search bar in the bottom right corner of the screen.

Step 3: When Command Prompt appears, right-click on the application and select Run as administrator.

Step 4: In the Command Prompt interface, type the command “ipconfig /flushdns” and then press Enter.

After pressing Enter, receiving the message Successfully flushed the DNS Resolver Cache as shown below means you have successfully cleared the DNS Cache on Windows 8.

4. Clear DNS Cache on Windows XP

Step 1: Close all currently running software (Web browsers, Email…)

Step 2: Open Windows command by selecting the Start menu and typing 'cmd' in the search bar, then press Enter.

Step 3: In the Command Prompt window, type the command “ipconfig /flushdns” and press Enter.

Immediately on the notification window Successfully flushed the DNS Resolver Cache, you have completed the process of clearing DNS Cache on Windows XP computers.

5. Clear DNS Cache in Firefox on Computer:

In the Firefox browser, type 'about:config' into the address bar and press Enter. Here, right-click on the list of properties, select New and then Integer in the context menu.

A dialog box appears, enter 'network.dnsCacheExpiration' into the new integer value and set the integer value to 0 as shown below.

When disabled, Firefox will use the Cache memory provided by the operating system.

6. Clear DNS Cache in Chrome on Computer:

Frequently Asked Questions

How can I clear the DNS cache on Windows 10?

To clear the DNS cache on Windows 10, right-click the Windows icon, select Command Prompt (Admin), then type 'ipconfig /flushdns' and press Enter. You should see the message 'Successfully flushed the DNS Resolver Cache' once the process completes.

What steps do I need to follow to flush DNS cache on Windows 7?

To flush DNS cache on Windows 7, close all running applications, open Command Prompt as Administrator, then enter 'ipconfig /flushdns' and press Enter. You will receive a notification indicating that the DNS cache has been successfully flushed.

Is it necessary to clear the DNS cache regularly on my computer?

Yes, clearing the DNS cache regularly is advisable to enhance internet connectivity and resolve potential browsing errors. An overloaded DNS cache can slow down your system and hinder access to websites.

How do I flush DNS cache on older Windows versions like XP?

To flush the DNS cache on Windows XP, close all applications, open Command Prompt by typing 'cmd' in the Start menu, and then execute the command 'ipconfig /flushdns'. You should see a confirmation message once the cache is cleared.

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