Error 100
LG Smart TV
Severity: MinorWhat Does This Error Mean?
Error 100 on an LG Smart TV means the TV has no internet access — it cannot reach any online services. The TV may be connected to your Wi-Fi but not actually have internet, or it may have no network connection at all. Restarting your router and the TV resolves Error 100 in the vast majority of cases.
Affected Models
- LG OLED C3
- LG QNED85
- LG UHD 75UP8770
- LG NanoCell 90
- LG OLED evo G3
Common Causes
- Your internet service provider (ISP) has a temporary outage in your area
- Router needs a restart to refresh its connection to the ISP
- Wi-Fi password has changed and the TV is using an old saved password
- Router DHCP server has run out of addresses and cannot assign one to the TV
- ISP account may have been suspended or billing issue has cut service
How to Fix It
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Check if other devices (phone, laptop) have internet access on the same Wi-Fi network.
If other devices also have no internet, the problem is your ISP or router — not the TV at all.
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Restart your router and modem by unplugging both from the wall for 30 seconds, then plugging the modem in first and the router second.
The modem must fully reconnect to your ISP before the router starts — unplugging them in the right order is important.
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Power cycle the TV by unplugging it from the wall for 60 seconds, then restart it.
The TV may have cached a broken network state — a cold restart forces it to request a new IP address from the router.
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On the TV, go to Settings → General → Network → Wi-Fi Connection and reconnect to your network.
Re-entering your Wi-Fi credentials ensures the TV has the current password and gets a fresh connection.
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Run a network test on the TV: Settings → General → Network → Connection Test.
The built-in test tells you exactly where the connection fails — Wi-Fi signal, router, or internet — which narrows down the cause.
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If all else fails, connect the TV to the router with an Ethernet cable and test again.
A wired connection confirms whether the issue is Wi-Fi-specific — if Error 100 disappears over Ethernet, the TV Wi-Fi module or your router Wi-Fi is at fault.
When to Call a Professional
Error 100 is almost always an internet or router issue — no TV repair is needed. All fixes involve your home network equipment or ISP connection. If your router shows a solid internet light and all other devices have internet but the TV does not, contact LG support.
Frequently Asked Questions
My LG TV says it is connected to Wi-Fi but still shows Error 100 — how?
It is possible to be connected to your router (Wi-Fi is working) but have no actual internet. This happens when your router itself has lost its connection to your ISP. Check your router's internet indicator light — if it is red or off, restart the modem and router.
Error 100 appeared after my ISP installed a new router — what should I do?
A new router means a new Wi-Fi network name (SSID) and password. Go to Settings → General → Network on the TV and reconnect to the new network name with the new password. The TV was trying to connect to your old network which no longer exists.
Can I fix Error 100 without restarting my router?
Sometimes yes — go to Settings → General → Network → Connection Test to see exactly where the failure is. If the test shows your Wi-Fi signal and router are fine but internet fails, the issue is with your ISP. In that case, contact your ISP directly — no amount of TV troubleshooting will fix an ISP outage.