How To Flush Dns: The Ultimate Guide

  • 3 min read
  • Aug 24, 2023
Flush DNS Windows 10 How to Flush DNS on Windows 10
Flush DNS Windows 10 How to Flush DNS on Windows 10 from

Greetings, Ihsanpedia Friends!

Welcome to this comprehensive guide on how to flush DNS. If you are experiencing connectivity issues, slow internet speed, or inability to access certain websites, flushing DNS can be a quick and effective solution. In this article, we will walk you through the step-by-step process of flushing DNS, discuss its advantages and disadvantages, provide a detailed explanation, and answer some frequently asked questions. So, let’s dive in!


DNS (Domain Name System) is like the phonebook of the internet, translating domain names into IP addresses that computers can understand. However, sometimes DNS records can become corrupted or outdated, causing connectivity problems. Flushing DNS refers to the process of clearing the DNS cache on your computer or device, allowing it to fetch fresh DNS records from the authoritative DNS servers. This can help resolve various issues and improve your browsing experience.

Now, let’s explore the advantages and disadvantages of flushing DNS:

Advantages of Flushing DNS:

1. Faster Internet Speed:

By flushing DNS, you can speed up your internet connection as it clears the cache and retrieves the latest DNS records.

2. Resolving Connection Issues:

Flushing DNS can fix connectivity issues, such as the inability to access certain websites or servers, by refreshing the DNS cache.

3. Updated Website Changes:

When a website updates its IP address or DNS settings, flushing DNS ensures that you access the latest version of the website.

4. Troubleshooting Network Problems:

Flushing DNS is often one of the initial troubleshooting steps recommended by tech support professionals to resolve network-related issues.

5. Privacy and Security:

Clearing the DNS cache can help protect your privacy by erasing any stored records of websites you visited.

6. Compatibility:

Flushing DNS works across various operating systems, including Windows, macOS, Linux, and mobile devices.

7. Easy and Quick:

The process of flushing DNS is simple and can be done within a few minutes, even by non-technical users.

Disadvantages of Flushing DNS:

1. Delay in Accessing Websites:

After flushing DNS, your computer needs to fetch fresh DNS records, which may cause a slight delay in accessing websites for the first time.

2. Loss of Local DNS Records:

If you have manually added DNS records on your local machine, flushing DNS will remove them, requiring you to re-enter them.

3. Temporary Solution:

Flushing DNS is a temporary fix and may not permanently resolve underlying network or connectivity issues.

4. Limited Control:

Flushing DNS only clears the local DNS cache on your device and does not have control over DNS records on external servers.

5. Dependency on DNS Servers:

Flushing DNS relies on the availability and responsiveness of the DNS servers to fetch fresh DNS records.

6. Potential Disruption:

In rare cases, flushing DNS can cause temporary disruption to network services, although it is unlikely.

7. Lack of Technical Knowledge:

For users with limited technical knowledge, flushing DNS may seem intimidating or confusing, leading to potential errors.

The Step-by-Step Guide to Flushing DNS:

To flush DNS, follow these simple steps:

Operating System Command
Windows ipconfig /flushdns
macOS sudo killall -HUP mDNSResponder
Linux sudo systemd-resolve --flush-caches
iOS Go to Settings >Wi-Fi > Tap on the connected Wi-Fi network >Renew Lease
Android Go to Settings >Wi-Fi > Long press on the connected Wi-Fi network >Modify Network >Advanced Options >Renew Lease

Frequently Asked Questions (FAQs)

1. Can flushing DNS fix all internet connectivity issues?

No, flushing DNS can help resolve certain connectivity issues, but it may not fix all problems. It is one of the initial troubleshooting steps to try.

2. Will flushing DNS delete my browsing history?

No, flushing DNS only clears the DNS cache, which stores domain-to-IP mappings. It does not delete your browsing history or cookies.

3. How often should I flush DNS?

There is no specific frequency for flushing DNS. You can do it whenever you encounter connectivity issues or want to ensure updated DNS records.

4. Can I flush DNS on my smartphone or tablet?

Yes, you can flush DNS on both iOS and Android devices by following the steps mentioned above for each respective operating system.

5. Will flushing DNS affect my internet service provider (ISP)?

No, flushing DNS only clears the local cache on your device. It does not impact your ISP or their DNS servers.

6. What should I do if flushing DNS doesn’t resolve my issue?

If flushing DNS doesn’t fix the problem, you may need to contact your internet service provider or seek further technical assistance.

7. Can I automate the process of flushing DNS?

Yes, you can create scripts or use third-party software to automate the process of flushing DNS on your computer.


Now that you have learned how to flush DNS, you can effectively troubleshoot connectivity issues and improve your internet browsing experience. Remember to follow the appropriate steps based on your operating system or device. Flushing DNS offers various advantages, including faster internet speed and resolving connection issues, while having a few limitations. If you encounter any problems, don’t hesitate to seek professional assistance. Take control of your DNS cache and enjoy a smoother online experience!

Disclaimer: The information provided in this article is for educational purposes only. We do not take any responsibility for the actions performed by readers based on this information. Proceed at your own risk.