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How To Flush DNS Cache On Mac: Easy Guide?

Learn how to flush DNS cache on Mac with easy steps. This guide covers clearing DNS cache on Mac, reasons for doing it, and how to recover deleted cache files on Mac.
Classen Becker
Classen Becker Originally published Nov 15, 24, updated Dec 16, 24

Ever faced issues with your internet connection on your Mac? Websites not loading, or perhaps they’re loading slower than usual? These could be signs that your DNS cache needs a refresh. Clearing the DNS cache on Mac can solve many internet-related problems and enhance your browsing experience.

The DNS cache stores information about websites you visit, translating domain names into IP addresses. Over time, this cache can become outdated or corrupted, leading to connection issues. Learning how to clear the DNS cache on Mac is essential for maintaining smooth internet performance.

In this guide, we will explain what DNS cache is, why it’s crucial to clear it, and provide step-by-step instructions on how to flush DNS cache on Mac. We will also cover how to clear DNS on older macOS versions and introduce you to a reliable tool for recovering deleted cache files on Mac.

In this article

Part 1: What is DNS Cache?

The DNS (Domain Name System) cache is a temporary database that your computer maintains. This cache stores DNS records of websites you have visited. Whenever you visit a site, the DNS cache saves the site’s DNS information, allowing your computer to load the website faster next time.

However, the DNS cache can sometimes store outdated or incorrect data. This can cause problems when you try to visit websites. Clearing the DNS cache on Mac ensures that your computer fetches the most recent DNS information, which can solve many connectivity issues.

Part 2: Why Clear DNS on Mac: Top Reasons!

Clearing the DNS cache on your Mac can solve many common internet problems and improve your browsing speed. By deleting outdated or corrupted DNS entries, you ensure your Mac always uses the latest DNS information. Here are the top reasons why you should clear DNS on Mac regularly.

  • Fix Connectivity Issues: Outdated or corrupted DNS cache can cause websites to load incorrectly or not at all.
  • Improve Speed: Refreshing the DNS cache can lead to faster website loading times by removing old cache entries.
  • Update DNS Changes: If a website changes its DNS settings, clearing the cache ensures your Mac uses the updated settings.
  • Resolve Errors: Fix errors such as 404 (Page Not Found) and 502 (Bad Gateway) by deleting outdated cache entries.
  • Privacy Protection: Clear DNS cache Mac to remove traces of websites you've visited.
  • Troubleshooting: This is a helpful step in troubleshooting network and internet issues.
  • Security: Remove potentially malicious entries from your DNS cache.
  • Application Issues: Fix problems with apps that rely on the internet by ensuring they access the correct DNS information.

Part 3: How to Flush DNS Cache on Mac

Flushing the DNS cache on your Mac is a simple way to resolve connectivity issues and ensure you are accessing the most up-to-date web addresses. By clearing the DNS cache, you can fix problems with loading websites and improve overall browsing speed.

Clearing the DNS cache on your Mac is quite simple, even if you're not very tech-savvy.

You'll need:

  • Access to the command line
  • Your computer password
  • A specific text command, which varies based on your macOS version

With these, you'll be able to clear your DNS cache easily.

Follow these easy steps on how to clear DNS on Mac and enjoy a smoother internet experience.

  1. Go to Applications > Utilities > Terminal. Alternatively, you can also perform a quick spotlight search to launch the Terminal app on macOS.
    open terminal on mac
  2. In the Terminal, execute this command to flush DNS cache on Mac:
    flush dns cache mac

    sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder.

    You may be prompted to enter your password. When you type your password, you won't be able to see it on the screen—not even as asterisks. It may seem like nothing is happening, but rest assured, it is.

  3. After entering your password and pressing enter, you won't get a confirmation message. Instead, you'll see a new terminal prompt appear. So, yes, you won’t see a confirmation message, but the command will have flushed the DNS cache.

Part 4: How to Flush the DNS Cache on macOS X and Older macOS Versions

Flushing the DNS cache on older macOS versions can help resolve various internet connectivity issues and ensure smooth browsing. Whether you're using macOS X El Capitan or an older version, the steps are straightforward.

how to flush dns cache on mac.jpg

Here's how you can clear the DNS cache on different macOS versions to keep your network running smoothly.

macOS X El Capitan and Later:

Open Terminal > Type sudo killall -HUP mDNSResponder > hit Enter.

macOS Yosemite:

Open Terminal > Type sudo discoveryutil mdnsflushcache > hit Enter.

macOS Mavericks and Older:

Open Terminal > Type sudo killall -HUP mDNSResponder > hit Enter.

Part 5: Lost Crucial Data After Refreshing DNS Cache? Try Recoverit Today

During the process of clearing DNS cache, there's a chance you might accidentally delete important cache files. This can be frustrating, but don't worry — Wondershare Recoverit is here to help.

Wondershare Recoverit is a reliable tool that can recover deleted cache files on your Mac. It's designed to retrieve lost data, even if it was accidentally deleted during DNS cache clearing.

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  • Recovers lost or deleted files, photos, videos, music, emails, and other file types effectively, safely and completely.
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Here’s how Wondershare Recoverit can help:

  • Easy to Use: The software is user-friendly, making it simple for anyone to recover their lost files without needing advanced technical skills.
  • Effective Recovery: It has powerful scanning capabilities that can locate and recover various types of lost data, including cache files.
  • Quick Process: Recoverit works efficiently to ensure you get your deleted files back as quickly as possible.

Steps to Use Recoverit:

  1. Get Recoverit and install it on your Mac. Open the application and select the location where the cache files were stored. Click on "Start".
    recoverit mac recovery
  2. Wait for the scanning process.
    scanning process recoverit mac
  3. After the scan, preview the recovered files and click "Recover" to save them to a safe location.
    preview files and recover

When flushing the DNS cache on your Mac, there's a chance you might accidentally delete important cache files. This is where Wondershare Recoverit comes in handy. It is a powerful data recovery tool that can quickly and effectively recover deleted cache files, ensuring you don't lose any critical data during the process.

With its user-friendly interface and advanced scanning capabilities, Recoverit makes it easy to locate and restore your lost files, even if you have limited technical knowledge. This means you can confidently clear your DNS cache knowing that, if anything goes wrong, Recoverit has got you covered.

Related Video Tutorial: How to Recover Files From Mac?

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Part 6: Pro Tips to Delete DNS Cache on Mac

Deleting the DNS cache on your Mac can help resolve many connectivity issues and ensure a smooth browsing experience. However, doing it the right way can make a significant difference. Here are some pro tips to help you efficiently and safely delete the DNS cache on your Mac.

  • Regular Maintenance: Make it a habit to clear your DNS cache periodically to keep your browsing experience smooth and trouble-free.
  • Use Terminal Carefully: When entering commands in the Terminal, ensure you type them correctly to avoid any potential issues. Double-check the command before hitting Enter.
  • Backup Important Data: Before clearing the DNS cache, back up any important data to avoid accidental loss. This is especially important if you're dealing with sensitive files.
  • Stay Updated: Keep your macOS and all your software updated to the latest versions. Updates often include fixes and improvements that can prevent DNS cache issues.
  • Close Unnecessary Applications: When flushing the DNS cache, close any unnecessary applications to prevent conflicts and ensure a smoother process.
  • Use Reliable Antivirus Software: Ensure you have reliable antivirus software installed to protect your system from potential threats that can corrupt your DNS cache.
  • Monitor Network Performance: After clearing the DNS cache, monitor your network performance to ensure the issue is resolved. If problems persist, additional troubleshooting may be necessary.
  • Consult Official Documentation: Refer to Apple’s official documentation for detailed instructions and troubleshooting tips related to DNS cache and network settings.
  • Avoid Public Wi-Fi: Whenever possible, avoid using public Wi-Fi networks, as they can expose your system to risks that might corrupt your DNS cache.

By following these tips, you can effectively manage your DNS cache and maintain a smooth and secure browsing experience on your Mac.

Learn more >>: 

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Conclusion

Flushing the DNS cache on your Mac is a simple yet effective way to resolve many internet connectivity issues. By following the steps outlined in this guide, you can ensure your Mac always uses the most current DNS information, enhancing your overall browsing experience. Don’t forget to use Wondershare Recoverit if you accidentally delete important cache files during the process.

Maintaining your DNS cache and keeping your system updated will lead to a smoother and more secure browsing experience. Regularly clearing the DNS cache is a good practice that can help prevent many common internet issues.

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FAQ

  • Q1: How often should I flush the DNS cache on my Mac?
    Flushing the DNS cache on your Mac once a month is generally a good practice to ensure optimal performance. However, if you frequently encounter connectivity issues or notice that websites are not loading correctly, you might need to flush the cache more often. Regularly clearing the DNS cache helps keep your browsing experience smooth by removing outdated or corrupted DNS entries that could cause problems.
  • Q2: Can clearing the DNS cache affect my saved passwords or browsing history?
    No, clearing the DNS cache on your Mac does not affect your saved passwords or browsing history. The DNS cache only stores DNS information, which translates domain names into IP addresses. It does not store personal information like passwords or history. Clearing the DNS cache simply refreshes the network information, ensuring your Mac fetches the most up-to-date DNS records.
  • Q3: Is it safe to clear the DNS cache on my Mac?
    Yes, it is completely safe to clear the DNS cache on your Mac. This process helps to refresh and update the DNS records, which can resolve many internet connectivity issues and improve your browsing speed. It removes outdated or corrupted entries from the cache, allowing your computer to use the most current DNS information. There is no risk to your personal data or system integrity from clearing the DNS cache.
Classen Becker
Classen Becker Dec 16, 24
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