How to Clear the DNS Cache in Windows 11

If you are experiencing sudden internet connection issues, such as websites failing to load, displaying outdated information, or returning frustrating “This site cannot be reached” errors while other sites load perfectly, the culprit is often a corrupted Domain Name System (DNS) cache. Rather than restarting your router or calling your internet service provider, the fastest and most effective troubleshooting step is learning how to clear the DNS cache in Windows 11.

In this comprehensive technical guide, we will explain exactly what the DNS cache does, why it frequently breaks, and provide the precise command-line instructions to flush it and restore your internet connectivity in seconds.

What is the DNS Cache?

The Domain Name System (DNS) acts as the phonebook of the internet. When you type a web address like digitash.com into your browser, DNS translates that human-readable name into a machine-readable IP address (like 192.168.1.1) so your computer can locate the server.

To speed up your browsing experience, Windows 11 saves (caches) these IP addresses locally on your hard drive. The next time you visit the same website, Windows retrieves the IP address directly from the local DNS cache rather than asking the external DNS server again, saving valuable milliseconds.

Why You Need to Clear (Flush) the Cache

While caching improves speed, it can cause severe connectivity issues when the cached data becomes outdated or corrupted. You should clear your DNS cache if:

• A Website Changes its IP Address: If a website migrates to a new server, its IP address changes. If your Windows cache still holds the old IP address, your browser will attempt to load a server that no longer exists, resulting in an error.
• You Encounter DNS Spoofing: Malicious software can sometimes alter your DNS cache, redirecting you to fraudulent phishing websites instead of the legitimate sites you intended to visit. Flushing the cache clears out these malicious entries.
• General Network Troubleshooting: Whenever you experience erratic browsing behaviour, a DNS flush is the standard, safe, first-line diagnostic step.

Step-by-Step Guide: How to Clear the DNS Cache

Unlike clearing your browser history, you cannot flush the DNS cache through the standard Windows Settings menu. You must execute a simple command via the Windows Terminal, Command Prompt, or PowerShell.

Step 1: Open the Command Prompt as Administrator

To modify system-level network configurations, you need elevated privileges.

1. Click on the Start Menu (the Windows icon) on your taskbar.
2. Type cmd or Command Prompt into the search bar.
3. In the right-hand preview pane, click Run as administrator. (Alternatively, right-click the Command Prompt icon and select “Run as administrator”).
4. If a User Account Control (UAC) prompt appears asking if you want to allow this app to make changes to your device, click Yes.

Step 2: Execute the Flush Command

You will now see the black Command Prompt window displaying the C:\Windows\System32> directory path.

1. Type the following command exactly as written (note the space before the forward slash):

   ipconfig /flushdns

2. Press the Enter key.

Step 3: Verify Success

The process takes less than a second. Windows will immediately return a confirmation message stating: “Successfully flushed the DNS Resolver Cache.”

You can now safely close the Command Prompt window by clicking the X in the top right corner or typing exit and pressing Enter.

Alternative Method: Using PowerShell

If you prefer using Windows PowerShell (the modern replacement for Command Prompt), the process is nearly identical.

1. Right-click the Start Menu button.
2. Select Windows Terminal (Admin) or Windows PowerShell (Admin) from the power user menu.
3. Type Clear-DnsClientCache and press Enter. (Note: PowerShell does not output a success message for this specific command, but the cache will be cleared instantly).

Additional Troubleshooting Steps

If flushing the Windows DNS cache did not resolve your browsing issue, the corrupted cache might be stored directly within your web browser. Web browsers maintain their own independent DNS caches separate from the operating system.

How to Clear the Chrome/Edge DNS Cache

If you use Google Chrome, Microsoft Edge, or Brave, you can flush the browser’s internal cache using a hidden settings page:

1. Open your browser and paste the following URL into the address bar: chrome://net-internals/#dns (If you use Edge, type edge://net-internals/#dns).
2. Press Enter.
3. Click the Clear host cache button. There will be no confirmation message, but the cache is instantly wiped.

Frequently Asked Questions

Is it safe to clear the DNS cache?

Yes, it is entirely safe and non-destructive. Flushing the cache does not delete your browsing history, saved passwords, bookmarks, or personal files. It simply forces Windows to request fresh, up-to-date IP addresses the next time you browse the web.

How often should I flush my DNS?

There is no need to perform this action regularly as a maintenance routine. Windows manages the cache automatically. You should only run the flush command when you are actively experiencing internet connectivity issues.

Understanding how the Domain Name System operates in the background is crucial for diagnosing network faults. By keeping the ipconfig /flushdns command in your troubleshooting toolkit, you can quickly clear the DNS cache in Windows 11, bypass outdated server routing, and ensure your system always connects to the correct, most secure version of a website.