Samsung TV & Audio QN65QN90CAFXZA 65" Class QN90C Neo QLED 4K Smart TV ERROR 301 Error Fix: DNS / Authentication Error

Error code ERROR 301 on the Samsung TV & Audio QN65QN90CAFXZA 65" Class QN90C Neo QLED 4K Smart TV means: DNS / Authentication Error. DNS resolution or server authentication failed. The TV cannot resolve domain names or authentication with a streaming service failed. Change DNS: Settings → General → Network → Network Status → IP Settings → DNS Setting → Enter Manually → 8.8.8.8. If authentication-specific (one app only), sign out of the app and sign back in. Clear the app cache. Reinstall the app. Check if the streaming account is active.

The most successful fix is "Reinstall Streaming App and Verify Streaming Account" (medium difficulty, ~25 minutes). This fix costs nothing. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Reinstall Streaming App and Verify Streaming Account") is rated medium difficulty and takes about 25 minutes. Tools needed: TV remote.

DIY cost: $0. Professional repair typically costs $100-$150. Many homeowners save money by trying the top-ranked community fix first.

The Samsung TV & Audio QN65QN90CAFXZA 65" Class QN90C Neo QLED 4K Smart TV has 8 other known error codes, including: 2 BLINKS (Power Supply Board Fault), 5 BLINKS (LED Backlight / Driver Protection Shutdown), 6 BLINKS (Main Board / T-CON Communication Failure), ANYNET FAIL (Anynet+ (HDMI-CEC) Not Working), APP CRASH (App Freezes or Crashes), and 3 more.

Error code ERROR 301 also appears on 4 other Samsung TV & Audio models: QN55LS03BAFXZA 55" Class The Frame QLED 4K Smart TV, QN65Q80CAFXZA 65" Class Q80C QLED 4K Smart TV, QN65S90CAFXZA 65" Class S90C OLED 4K Smart TV, UN55CU8000FXZA 55" Class CU8000 Crystal UHD 4K Smart TV. The fix may vary by model, so check each model's specific page for tailored repair steps.