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Flush DNS Cache in your PC or Mac

How do I flush a computer's DNS cache?

The following article explains how to flush a computer's DNS cache. When a computer visits a website for the first time, it stores the website's DNS information in cache. The next time the computer visits a website, it looks in the cache to see if the website's information is present to use. This can cause problems if the website's DNS information has changed since the computer's last visit. Flushing the cache removes all the information stored in cache, forcing the computer to find the new DNS information for the website.

To flush DNS for a computer running Windows, please do the following:

  1. On your local machine, click Start and select Run
  2. Type command and click Ok

  3. Within the prompt, type ipconfig /flushdns

You should see the following message:

To flush DNS for a computer running Mac OS, please do the following:

  1. On your local machine, open a terminal window.
  2. Within the prompt, type lookupd -flushcache

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