You have connected your premium VPN to a server in London. You open a fresh incognito window and navigate to the BBC iPlayer website. Everything looks perfect, but the video player immediately blocks you, claiming you are not in the United Kingdom. If you have already tried switching servers and clearing your browser cookies, the culprit is likely hiding deeper in your computer’s memory. It is time to clear your DNS cache.
Flushing your DNS cache is a highly effective, yet often overlooked, technical fix for persistent location errors. For a full breakdown of the other common issues that cause these errors, see our complete guide to troubleshooting streaming geoblock errors. This is part of our comprehensive series on the guide to streaming the FIFA World Cup for free.
Understanding the DNS Cache
Before you start typing commands into your terminal, it is helpful to understand exactly what you are deleting and why it matters for streaming.
What is DNS?
The Domain Name System (DNS) acts as the internet’s directory assistance. Computers do not understand web addresses like www.getshint.com. They only communicate using numerical IP addresses, like 192.168.1.1. When you type a website name into your browser, your computer sends a request to a DNS server asking for the corresponding IP address. Once the server replies, your browser knows exactly where to find the website.
Typically, your local Internet Service Provider handles these DNS requests. However, when you use a VPN, you want the VPN’s secure servers in your chosen country to handle those requests, keeping your true location hidden.
Why the Cache Causes Problems
To speed up your browsing experience, your operating system saves a local copy of recent DNS translations. This saved list is called the DNS cache. If you visited a streaming site yesterday without your VPN, your computer saved the IP address it found during that local connection.
Today, you turn on your VPN and visit the site again. Instead of asking the secure VPN server for the website’s location, your computer tries to be efficient. It pulls the old, local IP address straight from its cache. The streaming site detects this discrepancy between your VPN IP and your local DNS request, realizes you are trying to bypass their blocks, and shuts down the stream.
Pro Hint
Clearing your DNS cache does not delete any of your personal files, browser bookmarks, or saved passwords. It merely forces your computer to ask for fresh, updated directions the next time you visit a website.
How to Flush Your DNS Cache
The process of clearing the cache is referred to as “flushing.” It is completely safe and only takes a few seconds, but the method varies depending on your operating system.
Flushing DNS on Windows
Windows makes this process relatively simple using the Command Prompt. First, you need to open the start menu and type “cmd” into the search bar. When the Command Prompt app appears in the results, right-click on it and select “Run as administrator.” You must have administrator privileges to clear the system cache.
Once the black terminal window opens, type the following command exactly as written: ipconfig /flushdns. Press the Enter key. Within a second or two, you should see a confirmation message stating “Successfully flushed the DNS Resolver Cache.” You can now close the window, ensure your VPN is connected, and try loading your stream again.
Flushing DNS on macOS
Apple users will need to use the Terminal application. You can find this by opening Spotlight Search (Command + Space) and typing “Terminal,” or by navigating to Applications, then Utilities, and launching Terminal from there.
The command you need depends slightly on which version of macOS you are running, but for almost all modern versions (Catalina, Big Sur, Monterey, Ventura, and Sonoma), the command is the same. Type this exactly into the terminal: sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder. Press Return. The system will ask for your administrator password. When you type it, the characters will not appear on the screen, which is a normal security feature. Just type the password and press Return again. There is no success message, but the cache is now cleared.
Watch Out
When typing commands into the macOS Terminal, pay strict attention to the spacing and semicolons. An incorrect character will result in an error message, and the cache will not be cleared.
Additional Network Resets
If flushing the DNS cache does not resolve your geoblock issue, you may need to perform a slightly deeper reset of your computer’s network settings.
Renewing Your IP Address (Windows)
Sometimes, your local router assigns your computer a stubborn IP address configuration that conflicts with the VPN tunnel. You can force your computer to drop its current network configuration and request a fresh one. This is also done through the Command Prompt.
Open the Command Prompt as an administrator, just as you did for the DNS flush. Type ipconfig /release and press Enter. This will temporarily disconnect you from the internet. Once that command completes, type ipconfig /renew and press Enter. It will take a moment for your computer to establish a fresh connection to your local network. Once finished, reconnect your VPN and try the stream.
Resetting the Winsock Catalog
This is a more aggressive troubleshooting step for Windows users. The Windows Socket (Winsock) API dictates how network software communicates with network services. If this catalog becomes corrupted, it can cause persistent connectivity issues with VPN applications.
To reset it, open the Command Prompt as an administrator. Type the command netsh winsock reset and press Enter. The system will process the command and then instruct you to restart your computer. You must reboot your machine for the reset to take effect. After restarting, launch your VPN, connect to your desired server, and test the streaming platform.
Frequently Asked Questions
There is no set schedule for flushing your DNS cache. You only need to do it when you are actively experiencing connectivity issues, such as a streaming site detecting your true location despite using a VPN, or a website failing to load after a server migration.
No, the ipconfig /flushdns command simply deletes a local file. It does not disconnect you from your Wi-Fi or interrupt any ongoing downloads. However, the subsequent ipconfig /release command will temporarily drop your connection.
It is generally best practice to disconnect your VPN, flush the DNS cache, and then reconnect the VPN. This ensures that the VPN tunnel establishes a completely fresh connection using the newly cleared local network settings.
Yes, but the easiest method on mobile devices is usually just to turn on Airplane Mode for about fifteen seconds, then turn it off. This forces the device to drop all network connections and clear its temporary network caches, achieving a similar result to a manual DNS flush.
Yes, the specific commands listed above for flushing the DNS and renewing your IP address are standard, built-in network troubleshooting tools provided by Microsoft and Apple. They are completely safe and will not harm your computer or delete personal files.