Clear DnsClientCache - PowerShell

Overview

Clear-DnsClientCache removes the local computer’s DNS client cache, improving network connectivity and resolving issues related to outdated or incorrect DNS entries.

Syntax

Clear-DnsClientCache [-Name <String>] [-Confirm] [-WhatIf] [-Force] [<CommonParameters>]

Options/Flags

• -Name: (Optional) Specifies the name of the DNS client whose cache should be cleared. Defaults to the current client.
• -Confirm: (Optional) Prompts the user for confirmation before executing the command.
• -WhatIf: (Optional) Simulates the command’s execution without making any actual changes.
• -Force: (Optional) Suppresses confirmation prompts and forces the command to execute.

Examples

Clear the local DNS client cache:

Clear-DnsClientCache

Clear the cache for a specific DNS client named “myClient”:

Clear-DnsClientCache -Name myClient

Common Issues

• Failed to clear DNS cache: Ensure you have sufficient permissions to perform the operation or that the specified DNS client exists.

Integration

• Combine with Invoke-WebRequest to test network connectivity after clearing the DNS cache.
• Use with Get-DnsClientCacheEntry to check the contents of the DNS cache before and after clearing.

Related Commands

• Resolve-DnsName: Resolves DNS names to IP addresses.
• **Get-DnsClient`: Gets information about DNS clients.