How to Flush Your DNS Cache on Windows: The Ultimate Step-by-Step Guide

Whenever you browse the web, your computer keeps a temporary database (called the DNS cache) of the IP addresses for the websites you visit. This helps your browser load pages faster in the future. However, if a website changes its server IP address, or if your local network cache gets corrupted, you might encounter loading errors, broken page layouts, or “Site cannot be reached” messages even though your internet is working.

Clearing or “flushing” your DNS cache forces your computer to clear out outdated records and request fresh, up-to-date information from your network provider.

In this comprehensive guide, we will walk you through the fastest and most reliable methods to flush your DNS cache on modern Windows operating systems.

1. Prerequisites: Opening an Elevated Command Prompt

To clear system-level network configurations like the DNS cache, you need to run the command utility with administrative privileges.

Steps to open Command Prompt as Administrator:

1. Click on the Start menu or press the Windows Logo Key + S to open the search bar.
2. Type cmd or Command Prompt.
3. On the right side of the search results, click Run as administrator. (Alternatively, you can press Win + X and select Terminal or Command Prompt (Admin)).
4. If a User Account Control (UAC) prompt appears asking for permission, click Yes.

2. The Core Command: Flushing the DNS

Once you have an administrator Command Prompt window open, executing the flush command takes only a few seconds.

Steps to flush DNS:

1. Type the following command exactly as written into the terminal window:DOSipconfig /flushdns
2. Press Enter on your keyboard.
3. Within a split second, the terminal will output a success confirmation message:Windows IP Configuration successfully flushed the DNS Resolver Cache.

3. Optional: Resetting IP and Winsock (Advanced Troubleshooting)

If flushing the DNS alone does not resolve your persistent connection issues, your network stack might need a deeper reset. You can run these additional commands right after your DNS flush while still in the administrator Command Prompt:

1. Reset your IP configuration: Type ipconfig /renew and press Enter to request a fresh IP address from your router.
2. Reset the Winsock catalog: Type netsh winsock reset and press Enter to repair corrupted network socket configurations.
3. Restart your computer when prompted to finalize the network reset.

Summary Cheat Sheet

Step	Action / Command	Purpose
1. Open Terminal	Search cmd > Run as administrator	Secures the necessary administrative permissions
2. Flush DNS	ipconfig /flushdns	Clears outdated local DNS cache entries
3. Verify	Look for the “Successfully flushed” message	Confirms the operation completed cleanly

By regularly flushing your DNS cache when troubleshooting routing errors or broken web pages, you can quickly clear out stale network data and restore smooth browsing performance.