Samsung TV Error Code 105: Fix the WiFi and DNS Issues Behind It

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Samsung TV error code 105 appears when your Smart TV cannot connect to the internet or reach Samsung’s online services. The error usually points to a network problem — most often DNS settings, an unstable WiFi connection, router restrictions, or a 5 GHz network that an older Samsung TV cannot use.

This guide walks through the fixes that work most reliably for error 105, starting with the simplest checks and ending with the deeper network adjustments that resolve persistent cases.

Samsung TV error code 105 troubleshooting illustration

Quick Fix

Restart both the Samsung TV and the router, wait for WiFi to reconnect, then test an app — this resolves error 105 in most cases.

Try This First

  • Error appears on a specific app only → check Samsung server status before troubleshooting your network
  • Error appears across all apps → restart TV and router, then test
  • Error returns after a restart → reset network settings on the TV
  • TV is older than 2018 and connecting to a 5 GHz network → switch to the 2.4 GHz SSID

If the issue continues, follow the fixes below.

What Is Samsung TV Error Code 105?

Samsung TV error code 105 typically appears when the TV cannot establish a stable internet connection. In most cases, this issue is caused by DNS problems, network instability, or temporary communication errors with online services.

What Causes Error Code 105?

This error usually appears when your TV cannot connect to your network or resolve internet addresses correctly.

The most common causes include:

  • Weak or unstable internet connection
  • Router or modem issues
  • DNS configuration problems
  • Temporary network interruptions
  • Incorrect network settings
  • Outdated TV software

In most cases, this error is related to network or software issues rather than a hardware failure.

How to Fix Samsung TV Error Code 105

Try the following solutions one by one until the error is resolved.

Restart Your TV and Router

  1. Turn OFF your Samsung TV using the Power button
  2. Unplug the TV from the power outlet
  3. Unplug your WiFi router
  4. Wait at least 60 seconds
  5. Plug the router back in and wait for internet to reconnect
  6. Plug the TV back in and turn it ON
  7. Try opening an app or online service again

Restarting both devices refreshes the connection between your TV, router, and online services.

Check Your Internet Connection

  1. Test WiFi on your phone or computer
  2. Open a website or app on another device
  3. If other devices also have problems, restart your router
  4. If only the TV has problems, reconnect WiFi on the TV
  5. Move the TV closer to the router if possible

If your TV has general WiFi connection issues, follow this guide: Samsung TV Error Code 107 Fix

This helps you confirm whether the problem is your internet connection or the TV network settings.

Reset Network Settings

  1. Press the Home button on your Samsung remote
  2. Go to Settings → General → Network
  3. Select Reset Network
  4. Confirm the reset
  5. Restart your TV
  6. Reconnect to your WiFi network

Resetting network settings removes incorrect saved connection data that may cause error code 105.

Connect to the 2.4 GHz Network if Your TV Is Older

Samsung TVs released in 2018 or earlier only support 2.4 GHz WiFi networks. If your router broadcasts both 2.4 GHz and 5 GHz on different SSIDs, the TV cannot use the 5 GHz one — and error 105 is the typical result.

  1. Check your router’s SSID names. Most dual-band routers label the 5 GHz network with “5G” or “5GHz” in the name.
  2. On your TV, go to Settings → General → Network → Open Network Settings → Wireless.
  3. Forget the current network if the TV is connected to the 5 GHz SSID.
  4. Connect to the 2.4 GHz SSID instead.
  5. Test the connection.

If your router uses band steering (one SSID for both bands), log in to the router admin and either disable 5 GHz temporarily or split the bands into separate SSIDs.

If your TV connects but other Samsung TV WiFi issues remain, see the Samsung TV Not Connecting to WiFi Fix for deeper troubleshooting.

Test the TV with a Mobile Hotspot

A mobile hotspot test isolates whether the problem is your TV or your home network in under five minutes.

  1. Enable the personal hotspot on your phone.
  2. On the TV, disconnect from your home WiFi and connect to your phone’s hotspot.
  3. Open an app and test for error 105.

If the TV works on the hotspot, the problem is your router or ISP — not the TV. Move to the router-side fixes below. If the error still appears on the hotspot, the issue is on the TV side or with Samsung’s services.

Change DNS Settings

  1. Press the Home button on your remote
  2. Go to Settings → General → Network → Network Status
  3. Open IP Settings
  4. Choose DNS Setting
  5. Select Enter Manually
  6. Enter one of the following public DNS servers:
    • Google: 8.8.8.8 (with secondary 8.8.4.4)
    • Cloudflare: 1.1.1.1 (with secondary 1.0.0.1) — typically the fastest
    • OpenDNS: 208.67.222.222 (with secondary 208.67.220.220)
  7. Save the settings and test the connection

If 8.8.8.8 doesn’t resolve the error, try 1.1.1.1 instead — it routes through different servers and often works when Google’s DNS fails.

If DNS problems are causing Samsung TV connection errors, see this guide: Samsung TV Error Code 102 Fix

Changing DNS can help your TV reach online services when the default DNS server is not responding properly.

Check Your Router’s MAC Address Filter

Some routers — especially those supplied by ISPs — have MAC address filtering enabled, which can block your TV without an obvious error. The fix is to add the TV’s MAC address to the allowed list.

  1. On the TV, go to Settings → Support → About This TV → find the wireless MAC address.
  2. Log in to your router’s admin page (typically 192.168.1.1 or 192.168.0.1 in a browser).
  3. Find the MAC filtering or access control section.
  4. Add the TV’s MAC address to the allow list, or disable MAC filtering temporarily to test.
  5. Restart the router and reconnect the TV.

Connect the TV via Ethernet to Isolate the Problem

A wired Ethernet test rules out WiFi-specific issues. If you have a spare Ethernet cable and the router is reachable, connect it directly to the TV’s LAN port.

  1. Connect the TV to the router with an Ethernet cable.
  2. On the TV, go to Settings → General → Network → Open Network Settings → Wired.
  3. Test for error 105.

If error 105 disappears on Ethernet, the problem is your TV’s WiFi adapter or your router’s WiFi configuration. If it persists on Ethernet, the issue is deeper — likely Smart Hub server-side, software corruption, or DNS issues at the ISP level. The remaining fixes will address those scenarios.

Reduce Network Instability

  1. Move your TV closer to the router
  2. Remove obstacles between the TV and router
  3. Restart your router
  4. Disconnect unused devices from the same WiFi network
  5. Try opening the app or service again

If the connection keeps dropping or becomes unstable, follow this guide: Samsung TV Error Code 012 Fix

Unstable WiFi can interrupt communication between your Samsung TV and online services.

Update Your TV Software

  1. Press the Home button on your remote
  2. Go to Settings → Support → Software Update
  3. Select Update Now
  4. Wait for the update to finish
  5. Restart your TV

Outdated TV software can cause connection errors and prevent apps or online services from working correctly.

How to Prevent Error Code 105 in the Future

• Keep your WiFi signal strong
• Restart your router regularly
• Keep your TV software updated
• Avoid network interruptions
• Use stable DNS settings

Frequently Asked Questions

Why does Samsung TV error code 105 appear?

It usually appears when the TV cannot connect properly to the internet due to network or DNS issues.

Can DNS settings fix error code 105?

Yes, changing DNS settings can help resolve connection problems in many cases.

Is error code 105 a serious issue?

No, it is typically a network-related problem that can be fixed with simple troubleshooting steps.

For related Samsung TV connection problems, see Samsung TV Error Code 137 Fix, Samsung TV Error Code 118 Fix, and Samsung Smart Hub Not Working Fix.