How to Clear Your DNS Cache

Overview

Your DNS cache stores the locations (IP addresses) of web servers that contain web pages which you have recently viewed. If the location of the web server changes before the entry in your DNS cache updates, you can no longer access the site.

If you encounter a large number of HTML 404 error codes, you may need to clear your DNS cache. After you clear your DNS cache, your computer will query nameservers for the new DNS information.

How to clear your DNS cache

Windows® 8

To clear your DNS cache if you use Windows 8, perform the following steps:

  1. On your keyboard, press Win+X to open the WinX Menu.
  2. Right-click Command Prompt and select Run as Administrator.
  3. Run the following command: 
    ipconfig /flushdns
Windows IP configuration successfully flushed the DNS Resolver Cache.

Windows® 7 or 10

To clear your DNS cache if you use Windows 7 or 10, perform the following steps:

  1. Click Start.
  2. Enter cmd in the Start menu search text box.
  3. Right-click Command Prompt and select Run as Administrator.
  4. Run the following command: 
    ipconfig /flushdns
Windows IP configuration successfully flushed the DNS Resolver Cache.

Windows XP®, 2000, or Vista®

To clear your DNS cache if you use Windows XP, 2000, or Vista, perform the following steps:

  1. Click Start.
  2. On the Start menu, click Run.
  3. If you do not see the Run command in Vista, enter run in the Search bar.
  4. Run the following command in the Run text box: 
    ipconfig /flushdns
Successfully flushed the DNS Resolver Cache.

macOS® 10.10.4 and above

To clear your DNS cache if you use macOS X version 10.10.4 or above, perform the following steps:

  1. Click Applications.
  2. Click Utilities.
  3. Click Terminal.
  4. Run the following command: 
    sudo killall -HUP mDNSResponder
Warning:
To run this command, you must know the computer’s administrator account password.

macOS 10.10.1, 10.10.2, and 10.10.3

To clear your DNS cache if you use macOS X version 10.10 through 10.10.3, perform the following steps:

  1. Click Applications.
  2. Click Utilities.
  3. Click Terminal.
  4. Run the following command: 
    sudo discoveryutil mdnsflushcache
Warning:
To run this command, you must know the computer’s administrator account password.

macOS 10.7, 10.8, and 10.9

To clear your DNS cache if you use macOS X version 10.7, 10.8, or 10.9, perform the following steps:

  1. Click Applications.
  2. Click Utilities.
  3. Double-click Terminal.
  4. Run the following command: 
    sudo killall -HUP mDNSResponder
Warning:
To run this command, you must know the computer’s administrator account password.

macOS 10.5 and 10.6

To clear your DNS cache if you use macOS X version 10.5 or 10.6, perform the following steps:

  1. Click Applications.
  2. Click Utilities.
  3. Double-click Terminal.
  4. Run the following command: 
    sudo dscacheutil -flushcache
Warning:
To run this command, you must know the computer’s administrator account password.

ChromeOS

To clear your DNS cache if you use ChromeOS, perform the following steps:

  1. Open a new Chrome tab.
  2. Enter the following address 
    chrome://net-internals
  3. Hit the Enter key.
  4. From the menu, select DNS.
  5. Click the Clear host cache button.

Ubuntu

To clear your DNS cache if you use Ubuntu®, perform the following steps:

  1. Run the following command: 
    sudo systemd-resolve --flush-caches
  2. Run the following command: 
    sudo systemd-resolve --statistics

Red Hat® Enterprise Linux®, CentOS, and related Linux® releases