How to Flush DNS Cache Mac

Joel Mason

Mac, Tutorials

How to Flush DNS Cache on Mac

As a Mac user, you might encounter issues with your internet connectivity or website loading. One of the common troubleshooting steps is to flush the DNS cache.

DNS (Domain Name System) cache stores information about previously visited websites, allowing your Mac to load them faster. However, outdated or incorrect information in the cache can cause problems. In this tutorial, we will guide you through the process of flushing DNS cache on your Mac.

Step 1: Open Terminal

To start, we need to access the Terminal application, which allows us to execute commands on your Mac. You can find Terminal by following these steps:

  1. Click on the Magnifying Glass icon in the top-right corner of your screen.
  2. Type “Terminal” in the search bar.
  3. Click on the Terminal application from the search results.

Step 2: Execute Command

In the Terminal window, you will see a command prompt where you can enter commands. Follow these steps to flush DNS cache:

  1. Type “dscacheutil -flushcache” without quotes.
  2. Press the Enter/Return key on your keyboard.

You might be prompted to enter your administrator password for authentication. If so, enter it and press Enter/Return.

Step 3: Verify DNS Cache Flush

To confirm whether the DNS cache has been successfully flushed, follow these steps:

  1. Type “sudo killall -HUP mDNSResponder” without quotes.

If the cache has been flushed, you will see a message indicating that the mDNSResponder was restarted.

Step 4: Restart Your Mac (Optional)

If you’re still experiencing connectivity issues or website loading problems, it might be helpful to restart your Mac. Restarting can clear any residual cache and temporary files that could be causing the issue.

Note: Flushing DNS cache clears stored information, which means your Mac will need to retrieve updated information for websites you visit frequently. This may result in slightly slower loading times for those websites initially, but subsequent visits should be faster as the cache rebuilds.

Congratulations! You have successfully flushed the DNS cache on your Mac. This process can help resolve various internet connectivity issues and ensure smooth browsing experience. Remember to periodically flush your DNS cache if you encounter any further problems in the future.

We hope this tutorial was helpful to you. If you have any questions or need further assistance, feel free to reach out!

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