Internet Works on Some Devices but Not Others

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If your internet works on some devices but not others, the issue is usually not a full network outage. Instead, something is affecting how a specific device connects to your network.

I’ve run into situations where a phone works perfectly on Wi-Fi, but a laptop won’t load anything — even though both show a strong connection. In most cases, this comes down to DNS issues, IP assignment problems, or device-specific settings.

This guide walks through how to identify where the issue is happening and fix it step by step.

You Might Be Experiencing This Issue If:

  • One device connects to Wi-Fi but shows “no internet”
  • Your phone works, but your laptop or tablet does not
  • Some devices load websites while others cannot
  • One device connects, but pages won’t open

Common Symptoms (What You’ll Actually See)

You may notice one or more of the following:

  • One device says “Connected, no internet”
  • Websites load on one device but fail on another
  • Only certain devices can access the network
  • One device works on mobile data but not Wi-Fi

In most cases, these symptoms point to a device-specific network issue, not a full connection failure.

Identify Where the Failure Is Happening

Before troubleshooting further, determine where the issue occurs.

Only One Device Is Affected

If other devices work normally, the problem is usually:

  • DNS cache issues
  • incorrect IP assignment
  • firewall or antivirus restrictions
  • device network configuration problems

Multiple Devices Are Affected (But Not All)

If more than one device has issues, the problem may involve:

  • router configuration
  • DHCP (IP assignment) errors
  • DNS server issues

If all devices are affected, see:
Internet Works but Some Websites Won’t Load

Why This Happens (What’s Going on Behind the Scenes)

When your network is working but one device fails, it usually comes down to how that device communicates with the router.

Behind the scenes:

  • Your router assigns each device an IP address using DHCP
  • Each device stores its own DNS cache
  • Devices maintain separate network settings and routing tables

If one device receives incorrect information or stores bad data, only that device will fail — even while everything else works.

This is why the issue can feel confusing:
your internet is working, but one device cannot properly reach websites.

Step-by-Step Fixes (Restore Device Connectivity)

Step 1 — Restart Your Router (Reset DNS & IP Assignment)

What to do:

  • Restart your modem
  • Restart your router

Why this works:

Your router assigns IP addresses and DNS settings to every device. If it glitches, some devices may receive incorrect or incomplete network information.

Restarting forces the router to:

  • reset DNS connections
  • clear corrupted DHCP leases
  • assign fresh IP addresses

When this helps:

  • One device suddenly stops working
  • Devices show connected but no internet
  • Issue started without changes

Step 2 — Flush DNS on the Device That Isn’t Working

What to do:

On Windows:

  • Open Command Prompt
  • Run: ipconfig /flushdns

Why this works:

Your device stores DNS results locally. If those records become outdated or corrupted, that device may fail to load websites even while others work.

When this helps:

  • Only one device has the issue
  • Some websites fail while others load
  • DNS-related errors appear

Step 3 — Renew the Device’s IP Address

What to do: (Windows):

  1. Open the Start menu and search for Command Prompt
  2. Right-click it and select Run as administrator
    (If you don’t have admin access, just open it normally)
  3. Run the following commands one at a time:
  • Run:
    ipconfig /release
    ipconfig /renew

Why this works:

Your router assigns IP addresses using DHCP. Sometimes a device receives:

  • no IP
  • a duplicate IP
  • an expired lease

Renewing the IP forces the device to request a clean connection from the router.

When this helps:

  • Device shows “connected but no internet”
  • Only one device is affected
  • Network connection seems unstable

Step 4 — Change DNS Servers (Improve Reliability)

What to do:

Use:

  • Google DNS: 8.8.8.8 / 8.8.4.4
  • Cloudflare: 1.1.1.1 / 1.0.0.1

Why this works:

Your ISP’s DNS server may be slow or failing. Switching DNS bypasses your ISP and allows your device to resolve website addresses more reliably.

When this helps:

  • Some websites load, others don’t
  • DNS errors appear
  • Issue persists after restarting

Step 5 — Restart the Device (Reset Local Network State)

What to do:

  • Restart the device

Why this works:

Restarting resets:

  • network adapters
  • DNS cache
  • routing tables
  • Wi-Fi authentication

When this helps:

  • Issue persists after other fixes
  • Device behaves inconsistently
  • Connection drops or fails randomly

Step 6 — Check Firewall or Security Restrictions

What to do:

  • Temporarily disable firewall or antivirus
  • Turn off VPN
  • Test connection again

Why this works:

Security software can block or interfere with network traffic. In some cases, it prevents the device from reaching websites even though the connection is active.

When this helps:

  • Only one device is affected
  • Issue started after installing security software
  • Some websites are blocked

Step 7 — Check Date & Time Settings (Fix Secure Connection Errors)

What to do:

  • Make sure your device’s date and time are correct
  • Enable automatic time synchronization
  • Restart your browser after updating

Why this works:

Secure websites rely on time-sensitive certificates to verify connections.
If your system clock is incorrect, your device may reject valid websites because it thinks the certificate is expired or not yet valid.

This is more common than it seems, especially after system updates, battery resets, or traveling across time zones.

When this helps:

  • Websites show security errors (SSL, certificate warnings)
  • HTTPS sites won’t load, but others might
  • Issue occurs on one device only
  • Date or time is clearly incorrect

Step 8 — Restart Your Router (Final Network Reset)

What to do:

  • Restart your modem and router
  • Wait for full reconnection

Why this works:

Restarting resets DNS connections, clears DHCP leases, and resolves temporary routing issues that may affect multiple devices.

When this helps:

  • Multiple devices have issues
  • Problem started suddenly
  • Other steps didn’t resolve it

When These Fixes Won’t Work

If none of these steps resolve the issue, the problem may involve:

  • router firmware issues
  • device hardware limitations
  • ISP-level restrictions

At that point, the issue may require deeper configuration changes.

Final Tip

If your internet works on some devices but not others, the issue is usually caused by how a specific device is receiving or handling network information — not a full network failure.

By working through the steps above, you can identify whether the issue is related to DNS, IP assignment, or device configuration and apply the correct fix without guessing.