If your LG OLED B3 displays error code 301, you're dealing with a network connectivity issue that prevents your TV from accessing online services, streaming apps, or firmware updates. This error typically indicates that your TV cannot establish a stable connection to LG's servers or your local network is experiencing configuration problems. The good news is that most LG OLED B3 error code 301 instances can be resolved through systematic troubleshooting without needing professional repair. Follow the steps below to restore your TV's internet connection and get back to enjoying your favorite content.
What Causes Error Code 301 on LG OLED B3 TVs?
Error code 301 generally points to one of several underlying issues: DNS server problems, IP address conflicts, router firewall blocking LG servers, outdated TV firmware, or temporary outages with LG's content delivery network. Understanding these causes helps you work through solutions efficiently and avoid unnecessary frustration when your apps won't load or the TV reports it is offline despite appearing connected to Wi-Fi.
Step-by-Step Solutions to Fix LG OLED B3 Error Code 301
1
Restart Your TV and Network Equipment: Power off your LG OLED B3 completely by unplugging it from the wall outlet. Unplug your modem and router as well. Wait at least 60 seconds, then reconnect your modem first, followed by your router once the modem is fully online. Finally, plug your TV back in and power it on. This clears temporary network glitches that frequently trigger error code 301.
2
Verify Your Network Connection Status: Press the Settings button on your remote, navigate to Network → Wi-Fi Connection or Wired Connection, and check whether the TV shows as "Connected to Internet." If it shows connected to the router but not the internet, the problem likely lies with your ISP or DNS settings rather than the TV itself.
3
Change DNS Settings to Public DNS: Go to Settings → Network → [Your Connection] → Advanced Settings → DNS Setting and switch from "Auto" to "Manual." Enter 8.8.8.8 as the primary DNS and 8.8.4.4 as the secondary DNS (Google's public servers). Alternatively, use 1.1.1.1 and 1.0.0.1 for Cloudflare DNS. Save and test the connection. This resolves many LG OLED B3 error code 301 cases caused by ISP DNS failures.
4
Check for Firmware Updates Manually: Navigate to Settings → Support → Software Update → Check for Updates. If your TV can reach LG's servers, install any available updates. Firmware version 03.30.16 and later include improved network stability patches. If the update fails due to the error, download the firmware from LG's support website to a USB drive and install it via Settings → Support → Software Update → Update Now → USB.
5
Reset Network Settings and Reconfigure: Go to Settings → General → Reset to Initial Settings → Network. This clears saved Wi-Fi passwords, custom DNS entries, and any corrupted network profiles. Reconnect to your network from scratch, preferably using a 5GHz band if available for reduced interference. Test multiple apps to confirm error code 301 is resolved.
6
Disable Router Firewall Features Temporarily: Log into your router's admin panel and temporarily disable features like AiProtection, parental controls, or IPS/IDS security modules that may block LG server domains. Specifically whitelist domains such as us.ibs.lgappstv.com and ngfts.lge.com if your router supports domain exceptions. Re-enable security after confirming connectivity.
Important: Do not perform a full factory reset of your TV as your first troubleshooting step. This erases all personal settings, installed apps, and login credentials unnecessarily. Exhaust network-focused solutions first, as error code 301 is almost exclusively connectivity-related rather than a system failure.
When to Seek Additional Assistance
If you've completed all steps above and continue experiencing LG OLED B3 error code 301, the issue may involve hardware-level network adapter failure, regional LG server outages, or complex router configurations beyond standard home setups. Document which steps produced partial results—this significantly speeds up professional diagnosis.
Still Need Help With Your LG Device?
If these steps didn't resolve the error code 301 issue, our certified technicians can help.
Does error code 301 mean my LG OLED B3 is defective?
No. Error code 301 is a network communication error, not a hardware failure indicator. Your TV's panel, processor, and other components are typically unaffected. The error stems from connectivity barriers between your TV and LG's service infrastructure.
Can using an ethernet cable instead of Wi-Fi fix error code 301?
Often yes. Wired connections eliminate wireless interference and typically provide more stable DNS resolution. If Wi-Fi consistently produces error code 301 while ethernet works, focus troubleshooting on your router's wireless configuration or consider a mesh network upgrade.
How long do LG server outages typically last?
Most scheduled maintenance completes within 2-4 hours. Unplanned outages affecting error code 301 resolution are usually resolved same-day. Check LG's system status page or community forums to confirm whether widespread reports match your experience before extensive individual troubleshooting.