Why is my LG TV not connecting to WiFi after a factory reset?

After a factory reset, LG TVs clear all saved network credentials and require manual reconnection. Additionally, webOS 6 and later enable MAC address randomization by default, which can confuse routers with MAC filtering or DHCP reservations. To fix: complete the full setup wizard, disable MAC randomization in Advanced WiFi Settings, and manually enter your WiFi password. If the WiFi option is greyed out, disable Quick Start+ and power-cycle the TV before trying again.

My LG TV (2022 model) stopped connecting to WiFi after a software update — what changed?

Several 2022 LG TV firmware updates (webOS 22.x builds) introduced regressions affecting WPA3 and WPA2/WPA3 mixed-mode authentication. If your update coincided with the WiFi failure, switch your router's security mode to WPA2-Personal (AES only) as a temporary fix. Then check LG's support site for a newer firmware that patches the regression, and install it via USB or Ethernet. You can also roll back firmware via USB using an older .epk file from LG's official support downloads.

Why does my LG TV say 'Unable to obtain IP address' when connecting to WiFi?

This error means DHCP negotiation failed — your router did not assign an IP to the TV. Common causes include a full DHCP pool, a stale lease conflict, or the TV's MAC address being blocked. Fix: power-cycle the router to flush DHCP leases, then assign a manual static IP on the TV (e.g., 192.168.1.150 with gateway 192.168.1.1 and DNS 8.8.8.8). Alternatively, log into your router and expand the DHCP address pool or add a static reservation for the TV's MAC address.

My LG TV connects to WiFi but won't automatically reconnect after being turned off — how do I fix auto-connect?

Auto-connect failure is usually caused by one of three things: (1) Quick Start+ is disabled — enable it under Settings > General > Quick Start+ so the TV maintains its network context; (2) the router's AP isolation or client isolation feature is blocking re-association — disable it in your router's wireless settings; or (3) Energy Saving modes are powering down the WiFi adapter — go to Settings > Picture > Energy Saving and set it to Off or Minimum. Also ensure the TV's DHCP lease hasn't expired by setting a static IP reservation in your router.

My LG TV sees the WiFi network but fails with 'Authentication failed' — what should I do?

Authentication failure means the password or security protocol is mismatched. First, double-check your WiFi password (case-sensitive). Then verify your router's security mode: LG TVs have known issues with WPA3-only networks — switch to WPA2-Personal (AES) temporarily. Also ensure you're not connecting to the wrong band (2.4GHz vs 5GHz if they share an SSID). If your router recently changed its password or security settings, forget the network on the TV and reconnect from scratch. Rebooting the router also forces a clean authentication session.

LG TV Not Connecting to WiFi: Complete Troubleshooting Guide (2022 & Beyond)

Fix LG TV not connecting to WiFi with step-by-step solutions: reset network settings, update firmware, change DNS, and restore after factory reset.

Last updated: February 27, 2026

Last verified: February 27, 2026

2,451 words

Key Takeaways

Root cause 1: Corrupted network cache or DNS misconfiguration prevents LG webOS from completing the WiFi handshake, especially after a software update or factory reset.
Root cause 2: Router-side issues such as outdated DHCP leases, 5GHz band incompatibility, MAC address filtering, or overly strict firewall rules block the TV from obtaining an IP address.
Root cause 3: LG firmware bugs in specific webOS versions (notably webOS 6.x and 22.x released in 2022) introduced regression issues with WPA3 and mixed-mode WPA2/WPA3 networks.
Quick fix summary: Power-cycle both TV and router, manually set DNS to 8.8.8.8 / 8.8.4.4, switch the router to WPA2-only mode, and if the problem persists after a factory reset, re-enter network credentials manually instead of relying on auto-reconnect.

Fix Approaches Compared
Method	When to Use	Time	Risk
Power-cycle TV & Router	First step for any WiFi failure; clears transient state	2-5 min	None
Forget & Re-add WiFi Network	Password changed, SSID hidden, or credentials corrupted	3-5 min	None
Manual Static IP + Custom DNS	TV gets 'IP conflict' or 'Unable to obtain IP address' error	5-10 min	Low (may need updating if router changes)
Change Router Security to WPA2-Only	TV connects to 2.4GHz but fails on 5GHz or after 2022 firmware update	5 min	Low (slightly reduces security vs WPA3)
LG TV Network Reset (Settings > General > Reset)	All software fixes failed; network stack is corrupted	5-10 min	Low (loses saved network credentials)
Full Factory Reset (Settings > General > Reset to Initial Settings)	Post-update failure or persistent auto-connect failure	15-30 min	Medium (removes all apps, settings, logins)
Firmware Downgrade / Re-flash via USB	Specific firmware regression confirmed (e.g., webOS 22 build)	30-60 min	Medium-High (voids warranty on some models)
Ethernet Fallback + WiFi Re-enable	WiFi adapter appears disabled or greyed-out in settings	10 min	None

Understanding the Error: Why LG TVs Fail to Connect to WiFi

When your LG TV fails to connect to WiFi, you may see one of the following on-screen messages:

"Unable to connect to network"
"This network cannot connect to the internet"
"IP address conflict detected"
"DNS server is not responding"
"WiFi is turned off" (adapter greyed out)
"Authentication failed" (wrong password or security mismatch)

These errors map to distinct failure points in the connection stack: physical layer (radio/adapter), authentication (WPA handshake), addressing (DHCP/IP), and resolution (DNS). Each requires a different fix.

Step 1: Identify the Failure Type

1a. Check the exact error message on screen. Navigate to Settings > Network > WiFi Connection and attempt to connect. Note the exact error text.

1b. Check if the TV sees the network at all.

If your SSID does not appear in the list: the issue is at the radio/broadcast level (router band, distance, channel congestion, or TV adapter failure).
If the SSID appears but fails on connection: the issue is authentication or addressing.
If the TV connects but shows "no internet": DNS or ISP-side issue.

1c. Verify with another device. Connect a phone or laptop to the same WiFi network. If they also fail, the problem is the router or ISP, not the TV.

Step 2: Quick Wins (Fix in Under 5 Minutes)

Power-cycle everything:

Turn off the LG TV using the physical power button (not just remote standby).
Unplug the TV from the wall for 60 seconds.
Unplug your router and modem for 30 seconds.
Plug modem back in, wait 60 seconds, then plug in router, wait 60 seconds.
Power the TV back on and attempt to reconnect.

This clears stale DHCP leases, flushes the TV's network stack, and resets the router's ARP table.

Forget and re-add the network:

Go to Settings > Network > WiFi Connection.
Select your network and choose Forget or Delete.
Re-scan and reconnect by entering your password fresh.

Step 3: Fix IP Address and DNS Issues

The error "Unable to obtain IP address" or "IP address conflict" means DHCP has failed. Assign a static IP manually:

Go to Settings > Network > WiFi Connection > Advanced WiFi Settings (or Edit after selecting your network).
Disable Set Automatically for IP.
Enter the following (adjust subnet to match your network — commonly 192.168.1.x or 192.168.0.x):
- IP Address: 192.168.1.150 (pick a high number to avoid conflicts)
- Subnet Mask: 255.255.255.0
- Gateway: 192.168.1.1 (your router's IP)
- DNS Server 1: 8.8.8.8
- DNS Server 2: 8.8.4.4
Save and reconnect.

If the TV now connects, your DHCP server had a conflict or lease pool issue. Log into your router admin panel and either expand the DHCP pool or reserve a static IP for the TV's MAC address.

Step 4: Address Router Security / Band Compatibility Issues

WPA3 incompatibility (common in 2022 LG TV models): LG webOS 22 introduced regressions with WPA3 and mixed WPA2/WPA3 modes on certain chipsets. If your router is set to WPA3-only or WPA2/WPA3 transition mode, temporarily switch to WPA2-Personal (AES) only:

Log into your router admin panel (typically http://192.168.1.1 or http://192.168.0.1).
Navigate to Wireless Settings > Security.
Change encryption to WPA2-Personal with AES (not TKIP).
Save and reconnect the TV.

5GHz band issues: Some older LG TV WiFi adapters only support 2.4GHz or have reduced 5GHz range. If your router uses the same SSID for both bands:

Create a separate 2.4GHz SSID (e.g., "HomeNetwork_2G").
Connect the LG TV specifically to that SSID.

MAC address filtering: If your router has MAC filtering enabled, add the TV's MAC address:

Find the TV's MAC: Settings > Network > WiFi Connection > Advanced > MAC Address.
Add it to the router's allowed devices list.

Step 5: Fix LG TV Not Connecting to WiFi After Reset

After a factory reset, LG TVs do NOT automatically reconnect to WiFi — you must manually re-enter credentials. However, some users report the WiFi option is greyed out or auto-connect fails silently:

Complete the initial setup wizard fully — do not skip network setup.
If WiFi toggle is greyed out: go to Settings > General > Quick Start+ and disable it, then power-cycle. Re-enable after reconnecting.
If you see "WiFi is turned off": navigate to Settings > Network and toggle WiFi on manually.
If the TV auto-connected to a ghost profile: forget all networks and reconnect manually.
After a reset, also re-check that your router hasn't rate-limited or blocked the TV's new randomized MAC address (webOS 6+ uses MAC randomization by default — disable this in Advanced WiFi Settings if your router uses MAC allowlisting).

Step 6: Update or Roll Back Firmware

Update firmware (recommended first):

Connect via Ethernet temporarily.
Go to Settings > Support > Software Update > Check for Updates.
Install any available update and retest WiFi.

If a recent update broke WiFi (rollback via USB):

Find your TV's model number (back label or Settings > Support > TV Information).
Visit the LG Software & Drivers page: https://www.lg.com/us/support/software-firmware-drivers
Download the previous firmware version (.epk file) to a USB drive (root directory).
Insert USB, go to Settings > Support > Software Update > Update via USB.

Step 7: Network-Only Reset (Less Destructive Than Factory Reset)

Before doing a full factory reset, try resetting only network settings:

Go to Settings > General > Reset.
Enter PIN (default: 0000).
This resets network settings without wiping apps and user data.
After reset, manually reconnect to WiFi.

Step 8: Hardware Diagnosis

If all software steps fail, suspect a hardware issue with the WiFi adapter:

Try a USB WiFi adapter (some LG models support external USB WiFi dongles).
Connect via Ethernet to confirm internet works — if it does, the internal WiFi module may be faulty.
Contact LG Support for warranty service if the adapter is defective.

LG TV WiFi Auto-Connect Fix

If your LG TV connects manually but won't auto-reconnect after standby or power-off:

Enable Quick Start+: Settings > General > Quick Start+ — this keeps the network stack partially active.
Disable Energy Saving: Settings > Picture > Energy Saving > Auto Power Off — power-off modes can kill the WiFi adapter.
Check your router's client isolation or AP isolation setting — if enabled, the TV cannot re-initiate the connection after idle timeout.
Set a DHCP reservation in your router for the TV's MAC address so it always gets the same IP without contention.

Frequently Asked Questions

bash

#!/usr/bin/env bash
# ============================================================
# LG TV WiFi Diagnostics & Fix Helper
# Run from a Linux/macOS machine on the same network as the TV
# Or use these commands as reference for manual router/TV steps
# ============================================================

# --- 1. Find LG TV on the network (requires nmap) ---
echo "[*] Scanning for LG TV on local network..."
nmap -sn 192.168.1.0/24 | grep -A 2 -i "LG"
# Alternative: look for OUIs registered to LG Electronics
nmap -sn 192.168.1.0/24 --oui-file /usr/share/nmap/nmap-mac-prefixes 2>/dev/null \
  | grep -E "(LG|00:E0:91|A4:9A:58|CC:2D:8C|F8:A9:D0)"

# --- 2. Ping the TV once found (replace with actual TV IP) ---
LG_TV_IP="192.168.1.150"
echo "[*] Pinging LG TV at $LG_TV_IP..."
ping -c 4 "$LG_TV_IP"

# --- 3. Check if TV's IP has a DNS resolution issue ---
echo "[*] Testing DNS from this machine (proxy for TV DNS behavior)..."
nslookup lgappstv.com 8.8.8.8
nslookup ngfts.lge.com 8.8.8.8
# LG TVs contact these endpoints for firmware updates and app services

# --- 4. Check router DHCP leases (run on the router if SSH enabled) ---
# For OpenWrt / DD-WRT routers:
# ssh root@192.168.1.1 'cat /tmp/dhcp.leases'
# For standard Linux-based routers:
# ssh admin@192.168.1.1 'cat /var/lib/dhcp/dhcpd.leases | grep -A 5 "lg"'

# --- 5. Release and force a new DHCP lease (run on a Linux machine) ---
echo "[*] Flushing and renewing DHCP lease (run this on the TV's subnet)..."
sudo dhclient -r eth0 2>/dev/null || sudo dhclient -r wlan0 2>/dev/null
sleep 2
sudo dhclient eth0 2>/dev/null || sudo dhclient wlan0 2>/dev/null
ip addr show

# --- 6. Test DNS resolution the TV needs ---
echo "[*] Checking LG service endpoints..."
curl -sv --max-time 5 https://lgappstv.com 2>&1 | grep -E "(Connected|SSL|TLS|refused|timeout)"
curl -sv --max-time 5 https://ngfts.lge.com 2>&1 | grep -E "(Connected|SSL|TLS|refused|timeout)"

# --- 7. Check for IP conflicts on the network ---
echo "[*] Running ARP scan to detect IP conflicts..."
which arp-scan > /dev/null 2>&1 && sudo arp-scan --localnet | sort -t '.' -k4 -n
# Duplicate IP entries indicate a DHCP conflict affecting the TV

# --- 8. Recommended static IP settings to enter manually on LG TV ---
ROUTER_GW=$(ip route | grep default | awk '{print $3}')
SUBNET="255.255.255.0"
STATIC_IP="192.168.1.150"  # Change if this conflicts
DNS1="8.8.8.8"
DNS2="8.8.4.4"

echo ""
echo "===== Recommended LG TV Static IP Settings ====="
echo "IP Address  : $STATIC_IP"
echo "Subnet Mask : $SUBNET"
echo "Gateway     : $ROUTER_GW"
echo "DNS Server 1: $DNS1"
echo "DNS Server 2: $DNS2"
echo "Enter these under: Settings > Network > WiFi Connection > Edit > Advanced"
echo "================================================"

# --- 9. Router-side: Force WPA2 mode reminder ---
echo ""
echo "[!] If using WPA3 or mixed WPA2/WPA3 on your router:"
echo "    Log in to your router admin panel and set WiFi security to:"
echo "    WPA2-Personal (AES/CCMP only) -- NOT WPA3, NOT TKIP"
echo "    This resolves authentication failures on 2022 LG TV firmware."

Error Medic Editorial

The Error Medic Editorial team consists of senior DevOps and SRE engineers with 10+ years of experience diagnosing network, firmware, and smart device connectivity issues. We specialize in translating cryptic error messages into clear, actionable troubleshooting steps for both home users and IT professionals. Our guides are tested against real hardware and verified against manufacturer documentation.

Sources

Explore More wifi Guides

"Connected Without Internet" Error: Complete Fix Guide for Wi-Fi, Routers, Android & ISP Issues

Fix the "Connected Without Internet" error on Wi-Fi, Android, hotspots & routers. Step-by-step commands for Cox, CenturyLink, Frontier, T-Mobile & more.

"Connected Without Internet" Error: Complete Fix Guide for WiFi, Routers, Android & ISP Issues

Fix the 'connected without internet' error on WiFi, Android, hotspots & ISPs like Cox, CenturyLink & Fios. Step-by-step commands and solutions inside.

"Connected Without Internet" Error: What It Means and How to Fix It (All Devices & ISPs)

Fix the 'Connected Without Internet' WiFi error on Android, router, hotspot, Cox, CenturyLink, Fios & more. Step-by-step commands and solutions inside.