Recently I discovered Windows PowerShell has the ability to clear the local DNS on a machine, just like the traditional Command Prompt. Below is a table of the most common commands I personally use on a day-to-day basis and its PowerShell equivalent(s). Of course there are more PowerShell cmdlets, see the URL below for the complete list.

Command Prompt	PowerShell	Description
ipconfig /flushdns	Clear-DnsClientCache	Clears the contents of the DNS client cache.
ipconfig /registerdns	Register-DnsClient	Registers all of the IP addresses on the computer onto the configured DNS server.
ipconfig /displaydns	Get-DnsClientCache	Retrieves the contents of the DNS client cache.

 

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For years I have always been using Windows’s command prompt to flush the DNS cache on a local machine. As we know, that command is pretty well known, “ipconfig /flushdns“. Turns out there is an equivalent command we can run within the PowerShell console, and that is, “Clear-DnsClientCache“. Clear-DnsClientCache does exactly what it states, it clears the contents of the DNS client cache/local machine. Consider this next time you need to flush the local machine’s DNS cache.

Clear-DnsClientCache