How Do I Clear DNS Cache in Windows DNS Server?


Scott Campbell

In this tutorial, we will learn how to clear the DNS cache in Windows DNS Server. The DNS cache is a temporary storage area where the server stores information about recently accessed domain names and their corresponding IP addresses. Clearing the DNS cache can help resolve issues related to incorrect or outdated domain name resolutions.

Clearing the DNS Cache on Windows DNS Server

If you are using a Windows DNS Server, follow these steps to clear the DNS cache:

Step 1: Open Command Prompt

To begin, open the Command Prompt as an administrator. You can do this by searching for “Command Prompt” in the Start menu, right-clicking on it, and selecting “Run as administrator”.

Step 2: Flush the DNS Cache

Once you have opened the Command Prompt with administrative privileges, you can flush the DNS cache by entering the following command:

ipconfig /flushdns

This command will clear the DNS cache on your Windows DNS Server.

Step 3: Verify Cache Clearance

To verify that the DNS cache has been successfully cleared, you can use the following command:

ipconfig /displaydns

This command will display all cached DNS records after flushing. If no records are displayed, it means that your DNS cache has been cleared successfully.

Additional Tips

Here are some additional tips related to clearing the DNS cache in Windows DNS Server:

  • Scheduled Clearing: To ensure that your server’s DNS cache is regularly cleared, you can schedule a task to run the ipconfig /flushdns command at specific intervals.
  • Restarting the DNS Server: If you are still experiencing issues with DNS resolution after clearing the cache, you can try restarting the Windows DNS Server service.
  • Clearing Client-Side Caches: Keep in mind that clearing the DNS cache on your Windows DNS Server will not clear the caches on client machines. To clear client-side caches, you may need to flush the DNS cache on individual machines or use group policies to automate this process.

By following these steps and tips, you should now be able to effectively clear the DNS cache in your Windows DNS Server. Clearing the cache can help resolve various DNS-related issues, ensuring smooth and reliable domain name resolutions.

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