How to Fix DNS Problems That Prevent Websites From Loading at Home

If websites will not load at home but your Wi-Fi appears connected, DNS may be the problem. Start by testing whether the issue affects every device and every site, then restart your router, clear the affected device’s DNS cache, and check its DNS settings. If needed, use a known public DNS resolver or contact your internet provider.

DNS, or the Domain Name System, translates a name such as example.com into the numerical internet address a device needs to reach that site. When that lookup fails, a browser can show errors such as “DNS server not responding,” “server IP address could not be found,” or “this site can’t be reached.”

A DNS error does not always mean DNS is the root cause. A site may be down, your internet connection may be interrupted, a browser setting may interfere, or a router may be using incorrect settings. The steps below help separate those possibilities without making unnecessary changes.

First, confirm that DNS is likely the issue

Before changing settings, do a quick comparison. Try two or three unrelated websites, then try the same sites on another device connected to your home Wi-Fi.

• One website fails on every device: The website itself may have a problem. Wait a while or check from a cellular connection.
• Many websites fail on every Wi-Fi device: Look at the router, modem, internet service, or DNS settings for the network.
• Only one device fails: Focus on that device’s Wi-Fi connection, browser, VPN, security software, or DNS configuration.
• Sites work on cellular data but not home Wi-Fi: Your home network or its DNS service is the more likely source.

Also look at the exact browser message. “DNS_PROBE_FINISHED_NXDOMAIN” and “DNS server not responding” point more directly to name-resolution trouble than a generic timeout. Still, the message alone is not conclusive.

1. Restart the modem and router correctly

A restart clears many temporary connection and resolver problems. If you have separate modem and router units, restart both. A combined gateway needs only one restart.

• Unplug the modem and router from power.
• Wait at least 60 seconds.
• Plug in the modem first and wait until its connection-status light indicates it is back online. This can take several minutes.
• Plug in the router and wait for Wi-Fi to return.
• Reconnect a device and test several websites.

Do not press the small recessed Reset button unless you intend to erase the router’s configuration. A factory reset can remove your Wi-Fi name, password, custom DNS settings, and any setup required by your provider.

2. Check whether your internet connection is working

DNS cannot load websites without a working internet connection. Check the modem or gateway’s status lights against the labels or manual for your equipment. A red, amber, blinking, or unlit internet/online indicator can point to a service or line issue.

Try a different connection if practical. Turn off Wi-Fi on your phone and load a site over cellular data. If it works there but no household device works over Wi-Fi after a restart, check your internet provider’s outage information or contact its support team. Tell them whether the issue affects all devices, whether the modem shows an online connection, and what error you see.

3. Clear the DNS cache on the device that cannot browse

Devices store recent DNS lookups to speed up browsing. A stale or corrupted entry can keep one computer from reaching a site even after the network is working again. Clearing that cache is safe; the device simply looks up addresses again as needed.

Windows

Open Command Prompt as an administrator, enter the command below, and press Enter.

ipconfig /flushdns

Then close and reopen the browser. If the device has an old network lease, you can also restart it before testing again.

macOS

Open Terminal, enter the following command, and provide your Mac login password if prompted. The cursor will not visibly move while you type the password.

sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder

Restarting the Mac is a simpler alternative if you are uncomfortable using Terminal.

Phones, tablets, and smart TVs

These devices usually do not offer a direct DNS-cache command. Restart the device, turn Wi-Fi off and back on, or forget and rejoin the Wi-Fi network if the problem continues. Before forgetting a network, make sure you know the Wi-Fi password.

4. Disable a VPN, proxy, or browser DNS feature temporarily

VPN apps, proxy settings, parental-control tools, antivirus web shields, and browser “secure DNS” features can handle DNS requests differently from the rest of your network. A service outage or conflicting setting can make browsing fail on one device while other devices work normally.

Temporarily disconnect the VPN or disable the proxy, then try a website. In your browser settings, search for secure DNS or DNS over HTTPS and test with the setting turned off or set to use your current service provider. Re-enable security tools afterward if they were not the cause.

Do not leave a workplace-managed VPN or security service disabled if your employer requires it. Contact the organization’s IT support instead.

5. Review DNS settings and switch resolvers if necessary

Most home networks use automatic DNS settings supplied by the router or internet provider. That is usually the best first choice. If automatic settings are failing repeatedly, you can test a reputable public DNS resolver on one device before changing the entire household network.

Common public resolver addresses include:

• Cloudflare: 1.1.1.1 and 1.0.0.1
• Google Public DNS: 8.8.8.8 and 8.8.4.4
• Quad9: 9.9.9.9 and 149.112.112.112

On Windows, DNS options are generally under Settings > Network & internet > Wi-Fi or Ethernet > Hardware properties. On a Mac, look under System Settings > Network > Wi-Fi > Details > DNS. Menu names can vary by operating-system version.

Write down the current values before editing. Enter both an IPv4 primary and secondary address from the same service, save the change, and test. If nothing improves, return the setting to automatic. Avoid mixing random addresses from search results or copying settings intended for a business network.

6. Change router DNS only when the whole home needs it

If every device has recurring DNS failures, setting DNS at the router can apply the change across your home. Sign in to the router’s local administration page or app, find the internet/WAN DNS settings, record the existing values, and enter your chosen resolver addresses. Save the settings and restart the router if prompted.

The labels and location differ by router. Some provider-supplied gateways lock these settings, and some mesh systems manage them only in an app. If you cannot find the option, do not guess at advanced settings such as DHCP ranges, VLANs, or bridge mode. Use the manufacturer documentation or provider support.

Common mistakes to avoid

• Factory-resetting too early: This creates more work and rarely helps a provider outage.
• Changing several things at once: Make one change, test it, and note the result so you know what helped.
• Assuming a single unavailable site is your network: Test unrelated sites and another connection first.
• Ignoring device-specific software: A VPN, proxy, browser extension, or security program can be the issue.
• Leaving manual DNS in place without a reason: If the problem was temporary, returning to automatic DNS can simplify future troubleshooting.

Prevent repeat DNS trouble

Keep your router firmware current using the manufacturer’s normal update process, and change the router administrator password from its default if you have not already done so. Keep a record of your Wi-Fi name, password, provider account details, and any custom network settings. That makes recovery easier after equipment replacement or an accidental reset.

If problems occur at the same time every day, after a particular app opens, or only on one device, note the pattern. That detail can reveal a schedule-based security setting, VPN connection, or device configuration rather than a general DNS outage.

When to contact your internet provider or get more help

Contact your provider when every device loses access, the modem cannot regain an online connection, outages continue after a restart, or the problem returns often despite normal DNS settings. Ask whether there is an outage, a signal issue, or a provisioning problem with the gateway.

For one-device problems that persist after cache clearing and settings checks, the device maker’s support resources may be more appropriate. If you see unfamiliar DNS addresses in your router or device settings and no one in the household added them, change the router administrator and Wi-Fi passwords and seek help from the provider or manufacturer.

FAQ

Can Wi-Fi be connected while DNS is not working?

Yes. Wi-Fi only confirms that your device is connected to the router. DNS and the router’s connection to the internet can still fail, preventing websites from loading.

Will changing DNS make my internet faster?

It may improve the time needed to find a website’s address in some situations, but it does not increase the speed of your internet plan. The main reason to change DNS during troubleshooting is to restore reliable name lookups.

Should I use a public DNS service permanently?

That is a personal network choice. Review each provider’s privacy practices and features, and consider whether a family filter, employer requirement, or internet provider service depends on your current DNS configuration.

The practical next step

For most homes, the best order is simple: verify the scope of the problem, restart the modem and router, clear the affected device’s DNS cache, and check for VPN or browser DNS conflicts. Test a different DNS resolver only if the issue remains. This approach fixes many temporary failures while keeping your home network settings easy to manage.