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How do you flush DNS cache on Windows and Mac?

2 min read

In this step-by-step guide we’ll show you exactly how to flush DNS cache on both Windows and Mac systems. Over time, your computer may store outdated DNS entries, which can lead to slow or failed connections. For that reason, regularly clearing your DNS cache is a simple yet effective way to keep your internet connection running smoothly.

Why is flushing the DNS cache important?

Essentially, the DNS cache stores details about websites you’ve visited, so your browser can load them faster the next time. However, when DNS records change or become outdated, your system might still try to use the old information. As a result, you could experience issues like being unable to reach websites or receiving incorrect page results.

To avoid these problems, follow the steps below to flush your DNS cache and refresh your system’s connection to the most up-to-date DNS records.

How to flush DNS cache

On Windows

1. Click Start, then Run, or search for ‘cmd.exe’

2. Type the following command:

ipconfig /flushdns

3. Press ‘Enter‘.

You should see a confirmation message stating that the DNS Resolver Cache was successfully flushed.

On Mac

1. Open ‘Utilities‘ > ‘Terminal‘, or search for ‘Terminal‘ using “Spotlight“.

2. Type the following command:

dscacheutil -flushcache

3. Press Return

No confirmation will appear, but rest assured — the command will execute and clear the cache in the background.

Conclusion

By taking the time to flush your DNS cache, you help ensure that your device uses the most current DNS information. Consequently, this small maintenance task can significantly reduce potential connectivity issues and improve system performance.

At Network Dynamics, we’re committed to helping our clients maintain reliable, secure, and high-performing websites and networks. This guide was created to support you in managing your local DNS settings with confidence. If you need further help, feel free to get in touch with our expert support team.

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