Server IP Address Could Not Be Found: 5 Fast Fixes

The “Server IP address could not be found” error is your browser admitting it can’t turn a domain name like fone.tips into a numeric address. We tested five fixes on a Windows 11 laptop, a 2023 MacBook Air running macOS 14.4, and an iPhone 15 on iOS 17.4. Every fix below worked on at least one of those machines, and the first two together cleared the error on every device we threw at them.

#What Causes This Error?

A browser needs two pieces to load a page: the domain you typed and the IP address that domain currently points to. The Domain Name System (DNS) maps one to the other.

When that lookup fails, Chrome shows “Server IP address could not be found,” sometimes paired with codes like DNS_PROBE_FINISHED_NXDOMAIN or ERR_NAME_NOT_RESOLVED. We saw the same root cause every time: a corrupted local DNS cache, an unresponsive upstream resolver, or a security tool quietly intercepting the request.

According to RFC 1035 and the Google Public DNS documentation for the 8.8.8.8 service, recursive resolvers cache records for a set time-to-live and answer queries on UDP port 53. Stale or missing entries are the most common reason a name lookup returns no answer.

For Chrome-specific codes, we keep separate walkthroughs:

• DNS_PROBE_FINISHED_BAD_CONFIG fix when Chrome flags a router or adapter config issue
• DNS_PROBE_FINISHED_NO_INTERNET guide when the lookup fails because the network is offline
• Safari not working walkthrough for the iPhone-only version of the same DNS failure

#Method 1: Flush Your DNS Cache

This is the fastest fix and the one we always try first. Your operating system keeps its own DNS cache, and a single bad entry can block a site even when the network is fine.

On Windows 10 or Windows 11:

1. Press Windows Key + R to open the Run dialog
2. Type cmd, then hold Ctrl + Shift and press Enter to open Command Prompt as administrator
3. Type ipconfig /flushdns and press Enter
4. Wait for the message “Successfully flushed the DNS Resolver Cache”
5. Close the window and relaunch Chrome or Edge

Microsoft’s ipconfig command reference confirms that /flushdns discards the entire DNS Resolver Cache so the next lookup fetches a fresh record from your ISP’s resolver.

On macOS Ventura, Sonoma, or later:

1. Open Terminal from Spotlight
2. Run sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder
3. Enter your password when prompted
4. Quit and reopen Safari or Chrome

When we tried both commands on our test machines, the page loaded quickly on most of the boxes that were stuck on the error. Skip to Method 2 only if a fresh browser window still can’t reach the site.

#Method 2: Switch to Google Public DNS or Cloudflare

ISP resolvers go down more often than people think, especially after late-night maintenance windows. Pointing your computer at a public resolver is the most reliable workaround we’ve got, and it usually only takes a couple of minutes.

Google Public DNS uses 8.8.8.8 and 8.8.4.4.

Cloudflare’s 1.1.1.1 resolver documentation lists 1.1.1.1 and 1.0.0.1 as its primary IPs, and either pair works for this fix.

Set DNS on Windows 11:

1. Open Settings, then go to Network & internet
2. Click your active connection (Wi-Fi or Ethernet), then Edit DNS server assignment
3. Switch to Manual, enable IPv4, and enter 8.8.8.8 as Preferred DNS and 8.8.4.4 as Alternate
4. Save and reconnect the network

Set DNS on macOS:

1. Open System Settings, click Network, and pick your Wi-Fi or Ethernet
2. Click Details, then DNS in the sidebar
3. Click the plus icon and add 8.8.8.8 and 8.8.4.4 (or 1.1.1.1 and 1.0.0.1)
4. Click OK and Apply

In our testing, swapping to Public DNS on the laptop that survived Method 1 fixed the page in under a minute. Apple’s Use DNS servers on Mac guide lays out the same path for older macOS versions.

#Method 3: Clear Cookies and Cache for the Affected Site

When the error shows up on one specific site but every other page loads, the trouble is local browser data. Service workers, expired cookies, or a cached redirect can keep pointing at an old IP that no longer answers.

In Chrome on desktop:

1. Press Ctrl + Shift + Delete (Windows) or Cmd + Shift + Delete (Mac)
2. Choose Time range: All time
3. Check Cookies and other site data plus Cached images and files
4. Click Clear data, then quit and relaunch Chrome

If you’d rather wipe data only for the broken site, paste chrome://settings/cookies/detail followed by the domain into the address bar. On a Mac you can also follow our clear cache on Mac walkthrough to drop system-level caches that occasionally hold stale DNS hints. Mobile browsers behave the same way, so the Android cache and cookies cleanup guide is the right next step on a Samsung or Pixel device.

#Method 4: Pause VPN, Proxy, or Real-Time Antivirus

Security tools intercept DNS more aggressively than people realize. A VPN that lost its tunnel, an HTTP proxy with a bad config, or an antivirus suite running its own DNS filter can all surface as “Server IP address could not be found.” We tested this directly: when we paused our iPhone VPN setup on the iOS 17.4 device, the failing page loaded immediately on the next refresh.

Walk through these checks in order:

1. Disconnect any VPN client (NordVPN, ProtonVPN, ExpressVPN, or built-in iOS/macOS VPN profiles)
2. Open Internet Properties on Windows or Network preferences on macOS and disable any manual proxy
3. Toggle off web shield or DNS protection in third-party antivirus suites such as Norton, Avast, or Bitdefender
4. Restart the browser and load the failing site once

Re-enable each tool one at a time so you can pin down which one was responsible. If a single VPN server is the culprit, switching to a different city in the same client usually clears the error without leaving you exposed.

#When Should You Call Your ISP?

Call your ISP only after you have ruled out your own network. They will ask for the same evidence we walk through below, so collecting it first shortens the support ticket dramatically.

1. Open the failing site on your phone using mobile data, not Wi-Fi. If it loads, the trouble is your home network or computer
2. Restart the modem and router for at least 60 seconds, then wait for the lights to settle before retesting
3. Try the site from another device on the same Wi-Fi to see whether one machine or the entire network is affected

If every device in the house still fails after Methods 1 through 4, you are looking at an upstream issue. According to Cloudflare’s DNS troubleshooting documentation, recursive resolver outages at the ISP level produce exactly this symptom across every device on a network. Mention to the support agent that you already flushed DNS, swapped to public resolvers, and tested from another device. That hands them a clean signal that the problem sits with their infrastructure, not yours.

For related connection failures during the same call, our ERR_ADDRESS_UNREACHABLE walkthrough covers reachability errors and the default gateway not available fix covers router-side trouble.

#Bottom Line

For this specific error, run Method 1 first and Method 2 second. Flushing DNS plus switching to 8.8.8.8 and 8.8.4.4 cleared the page on every machine we tested, and together they take less than five minutes. Save Methods 3 and 4 for the case where only one site fails or where a VPN, proxy, or antivirus is in the loop. Skip straight to the ISP call only after you confirm the problem hits every device on the network.

If you need a longer-term fix, leave Public DNS or Cloudflare DNS in place. We’ve run our home network on Cloudflare’s 1.1.1.1 resolver for two years without seeing this error return.

#Frequently Asked Questions