Last updated: 2023-01-29

Source: https://support.freshdesk.com/support/solutions/articles/50000005674-steps-to-clear-local-and-browser-dns-cache

Steps to clear the Browser DNS Cache (Browser Specific):

Chrome:

  • Launch chrome browser
  • Type _chrome://net-internals/#dns_ in the address bar, then press Enter.
  • Click on _Clear host cache_ button
  • Chrome Browser DNS cache will be cleared

    • Opera:

  • Launch Opera on your Computer
  • Type _opera://net-internals/#dns_ in the address bar, then press Enter.
  • You’ll be taken to the DNS section of Opera’s internal settings page.
  • Click the button labelled _Clear Host Cache_ to flush the DNS cache.
  • Open a new tab, then type in the address _opera://net-internals/#sockets_ and press Enter.
  • You’ll be taken to the section of Opera’s internal settings page for cached socket pools.
  • Now click the button labelled _Flush Socket Pools_.
  • Now restart Opera browser.

    • Firefox:

  • Launch Firefox on your Computer.
  • In the address bar, type _about:config_ and press Enter.
  • Click _“I accept the risk!”_ on a warning page.
  • Use the search field at the top to search for _network.dnsCacheExpiration_.
  • Your search should return two variables, named _network.dnsCacheExpiration_ and _network.dnsCacheExpirationGracePeriod_.
  • Double-click on each variable’s value part so you can edit it, then change the value from the default _60 to 0_, which will prompt Firefox to immediately clear out its DNS cache.
  • After doing this, now set both variables back to _60_.
  • Now restart the Firefox browser.

    • Steps to clear the Local DNS cache (OS Specific):

    Windows OS:

  • Search for _command prompt_ in start menu
  • Right-click and Select "Run as administrator"
  • Type the command

    • ```generic

    ```

    Generic

  • If the command succeeds, you will receive the following message “ _Successfully flushed the DNS Resolver Cache._"

    • Mac OS:

  • Open your command line interface or Terminal
  • Type the below command

    • ```generic

    ```

    Generic

  • You may need to enter your administrator password
  • If the command succeeds the system will not return any output.