You type an address into Google Chrome, Microsoft Edge, or Safari, hit enter, and instead of the website loading, you are greeted with a grey warning screen: DNS_PROBE_FINISHED_NXDOMAIN.
This error is one of the most common web browsing errors in the world. Fortunately, it is also one of the easiest to fix once you understand what it means.
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What Does NXDOMAIN Actually Mean?
DNS stands for Domain Name System—the phonebook of the internet that translates human-readable domain names (like `rafvex.com`) into numerical IP addresses (like `82.29.199.147`) that web servers require.
NXDOMAIN is an official Internet engineering status code that stands for Non-Existent Domain. When your browser displays `DNS_PROBE_FINISHED_NXDOMAIN`, it means your computer queried your configured DNS server, and the server responded: *"That domain name does not exist in any global registry."*
If other websites work fine and only one specific site triggers NXDOMAIN, the domain might be expired or misconfigured. But if multiple sites trigger the error, your local computer's DNS cache or ISP resolver is corrupt.
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Solution 1: Flush Your Local DNS Resolver Cache
Operating systems store recent DNS responses in local memory to speed up browsing. When an IP address changes, this cache can become stale and cause NXDOMAIN.
On Windows 11 / Windows 10:
Open
Terminal or
Command Prompt as Administrator and run:
Flushing your local DNS resolver cache and switching to ultra-fast public anycast resolvers eliminates corrupt routing tables.
# Step 1: Flush local DNS cache
ipconfig /flushdns
# Step 2: Release current IP lease
ipconfig /release
# Step 3: Renew IP lease from router
ipconfig /renew
# Step 4: Reset Winsock network catalog
netsh winsock reset
On macOS:
Open
Terminal and execute:
# Flush DNS cache on macOS Sequoia, Sonoma, and Ventura:
sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder
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Solution 2: Clear Google Chrome's Internal Host Resolver Cache
Chrome maintains its own independent DNS cache separate from your operating system:
1. Open a new tab in Google Chrome.
2. Paste this internal URL into the address bar and press Enter:
`chrome://net-internals/#dns`
3. Click the button labeled Clear host cache.
4. Restart Chrome.
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Solution 3: Switch to High-Performance Public Anycast Resolvers
By default, your home router uses the DNS servers provided by your local Internet Service Provider (ISP). ISP resolvers are notoriously sluggish, prone to routing outages, and occasionally censor domains.
Switching to Cloudflare or Google Public DNS dramatically reduces latency and resolves NXDOMAIN bugs:
| Provider | Primary IPv4 | Secondary IPv4 | Primary IPv6 | Key Advantages |
|---|
| Cloudflare | `1.1.1.1` | `1.0.0.1` | `2606:4700:4700::1111` | Fastest global latency, strict privacy, zero IP logging |
| Google Public | `8.8.8.8` | `8.8.4.4` | `2001:4860:4860::8888` | Maximum uptime, global redundancy |
| Quad9 (Security) | `9.9.9.9` | `149.112.112.112` | `2620:fe::fe` | Automatically blocks malicious phishing domains |
How to Change DNS on Windows 11:
1. Press `Win + I` to open
Settings.
2. Go to
Network & internet >
Wi-Fi (or Ethernet) >
Hardware properties.
3. Beside
DNS server assignment, click
Edit.
4. Select
Manual, toggle on
IPv4, and enter `1.1.1.1` for Preferred DNS and `1.0.0.1` for Alternate DNS.
5. Set
DNS over HTTPS to
On (automatic template) for encrypted queries.