How To Flush DNS Cache On Windows/Linux/Mac

DNS caching in windows OS always created a problem for me whenever I set up a new blog. After a few hours or a couple of days, I could not access my newly setup blog from my laptop.

I used to shout on my ISP because I could access that particular blog on my mobile by the mobile internet but not by broadband internet (neither laptop nor mobile).

Flush DNS Cache From Your Local Machine And Server

When I set up this blog and again encountered the same issue then I knew that the problem was not on the side of the ISP but the problem was on my local machine. Stored DNS cache on my laptop was creating a problem.

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What is DNS Cache?

It is basically a collection of IP addresses and other DNS results like the recently viewed web addresses, stored on the local machine.

Sometimes some bad results also get cached and your domain name or IP does not resolve, due to bad DNS cache, you start receiving “Page Not Found“/”Page Can’t Be Displayed” or “404 Error Page” messages whenever you try to access any particular site.

How To Flush DNS Cache On Windows

Whenever you continuously receive “Page Not Found“/”Page Can’t Be Displayed” or “404 Error Page” then you must try to flush DNS cache on your computer. It will resolve your problem. The following are the steps to clear the DNS cache.

  •  Go to Run (Press Windows key + R ) or Search CMD or Command Prompt on Windows 10

run cmd

  • Type ipconfig /flushdns command in command prompt and press enter

flushed dns

  • After pressing enter you will see a message that “successfully flushed the DNS Resolver Cache“.

flushed dns

How To Clear DNS Cache In Linux

Many of the Linux distributors used NSCD (Name Service Caching Daemon) DNS caching application. If you have NSCD you can use following commands to flush DNS cache.

To clear DNS cache for a user:

  • nscd -i hosts

To clear DNS cache for all users:

  • nscd -I hosts

In some Ubuntu and Debian Linux, you can use the following command to flush DNS.

  • sudo service dns-clean restart

How To Clear DNS Cache In Apple OS X:

Apple OS Mac has a different command for every new version of OS. Identify your OS version and use the following commands to flush DNS cache.

Note: Open terminal to run command.

Sierra OS: sudo killall -HUP mDNSResponder
El Capitan: sudo killall -HUP mDNSResponder
Yosemite: sudo discoveryutil udnsflushcaches
Mavericks: sudo killall -HUP mDNSResponder
Mountain Lion: sudo killall -HUP mDNSResponder
Lion: sudo killall -HUP mDNSResponder
Snow Leopard: sudo dscacheutil -flushcache
Leopardsudo lookupd -flushcache

How To Clear Chrome Host Cache

If you are using a Chrome web browser you can go to (chrome://net-internals/#dns) and clear host cache.


Note: One thing you must keep in mind that if you want to flush DNS cache, you must run the command prompt/terminal as an administrator.

If you don’t do that probably; you would not be able to clear the cache. A user could be set up with limited privileges on your system.  A user must need administrative power to perform this action.

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