Netflix Error UI-800-3: How to Fix It on Any Device
UI-800-3 means the Netflix information cached on your device has gone stale, or a network hiccup stopped the app from opening. Refreshing that data — restart, sign out, reinstall — fixes it. The device itself is almost never broken.
Quick answer
UI-800-3 means data the Netflix app stored on your device needs to be refreshed. A full device restart followed by signing out of Netflix and back in often clears it.
- 1.Unplug the device from power, press its power button once and wait 1 minute (or leave it unplugged for 3 minutes), then plug it back in.
- 2.If the error remains, open Netflix's menu, choose Get Help → Sign out, then sign back in.
What it means
Netflix shows UI-800-3 when information the app stored on your device has gone stale, or when a network issue stopped the app from opening. It's a data-refresh problem — not a broken TV and not an account problem.
One important detail: if your screen shows extra numbers in parentheses — like UI-800-3 (100018) or UI-800-3 (307006) — Netflix treats each variant as a separate error with its own steps. This guide covers the plain UI-800-3; for a numbered variant, search Netflix Help for that exact code.
Common causes
- Stale app data. The Netflix app keeps account and interface data cached on the device. When that cache falls out of sync, the app fails to load and reports UI-800-3.
- Interrupted start-up. A brief network hiccup while the app was opening can leave it stuck until the device or the app data gets refreshed.
- Custom connection settings. Netflix lists custom DNS, VPN or proxy services, and custom modem settings as things that need to be restored to defaults when this error appears.
- Outdated firmware or an aging device. On set-top boxes, Netflix's advice is a firmware update or a restore through the manufacturer; very old devices can lose Netflix support entirely.
Before you start
- Check the exact code on screen: numbers in parentheses after UI-800-3 mean a different variant with its own dedicated fix.
- Have your Netflix email and password at hand — several of the fixes sign you out of the app.
- Confirm the device has a working internet connection; a network drop at launch can trigger the same code.
Fixes, from safest to last resort
Restart your device
No data loss- 1Unplug the TV or streaming device from power.
- 2Press the power button on the device once and wait 1 minute — or simply leave it unplugged for 3 minutes.
- 3Plug it back in, turn it on and open Netflix.
Pressing the power button while unplugged drains residual power so the device truly restarts instead of waking from standby. On Fire TV you can also restart from Settings → My Fire TV → Restart.
Restart your home network
No data loss- 1Turn off the device, then unplug both the modem and the router from power.
- 2After 30 seconds, plug the modem and router back in.
- 3Wait 1 minute, turn the device on and try Netflix again.
This rules out the 'network issue stopped Netflix from opening' side of the error. Some modems and routers take a few extra minutes to fully reconnect.
Sign out of Netflix and back in
No data loss- 1From the Netflix home screen, press Back on the remote to reach the menu, then open Get Help → Sign out (if the menu runs along the top, go left to your profile icon first) and confirm with Yes.
- 2Stuck on the error screen instead? Select More Details, then Sign out or Reset.
- 3Sign back in with your account and try Netflix again.
Can't find Get Help or Sign out anywhere? Netflix documents a hidden reset menu for these cases: with Netflix open, press Up, Up, Down, Down, Left, Right, Left, Right, Up, Up, Up, Up on the remote, then choose Sign out, Reset or Deactivate. Apple TV uses its own sign-out flow inside the app's settings.
Restore your default connection settings
Re-setup needed- 1Remove any custom DNS configured on the device and set it back to automatic.
- 2Disable or remove VPN and proxy services that affect the device.
- 3Undo custom modem or router settings you applied, then try Netflix again.
Netflix explicitly lists custom DNS, VPN/proxy services and custom modem settings as changes to revert for this error. If you're unsure how, the device manufacturer is the right contact.
Reinstall the Netflix app (Fire TV and Roku)
Re-setup needed- 1Fire TV/Stick: press Home → Settings → Applications → Manage All Installed Applications → Netflix → Uninstall, then reinstall it from the Appstore (or the Netflix button on the remote) and sign in.
- 2Roku: highlight Netflix on the home screen, press the star (*) button and choose Remove app, then re-add Netflix from the Roku Store and sign in.
- 3On most smart TVs (Samsung, LG) Netflix comes preinstalled and can't be uninstalled — if that's your case, move on to the next step.
Uninstalling signs you out, so keep your Netflix login handy. The Fire TV path is Netflix's official fix for this code; removing and re-adding a misbehaving app is Roku's documented troubleshooting for apps that won't load.
Reset Smart Hub (Samsung TVs)
Removes apps & settings- 1Open Settings → Support → Device Care → Self Diagnosis → Reset Smart Hub (on some models the path is Settings → Support → Self Diagnosis).
- 2Enter the TV's PIN — 0000 unless you changed it.
- 3When the reset finishes, run Smart Hub's setup again, sign in and open Netflix.
⚠ Resetting Smart Hub restores its factory defaults: it removes Smart Hub apps and deletes linked Samsung and service accounts from the TV. You'll need to set your apps up and sign in again.
If a menu doesn't match your TV
- Numbers in parentheses after the code — e.g. UI-800-3 (100018) — mean a specific variant (some point to hardware or DRM issues). Search Netflix Help for the exact code instead of following generic steps.
- On Apple TV the menu layout differs: use the sign-out option inside the Netflix app's settings rather than the Get Help path described above.
When to contact support
If nothing worked — especially on a set-top box from your TV provider — Netflix's own advice is to bring in the device manufacturer:
- Ask them to update the device's firmware or software to the latest version, then test Netflix after the update.
- Ask them to restore the device to its original settings — have your Wi-Fi password and Netflix login ready, since this removes saved data.
- If they can't fix it, the device may no longer be supported by Netflix (the Google Nexus Player, for example, lost Netflix entirely); you'll need a different supported device.
Sources
- Official source: Netflix Help Center — Netflix Error ui-800-3 · 2026-07-12help.netflix.com
- Official source: Samsung Support — How to reset your Samsung TV (Reset Smart Hub) · 2026-07-12www.samsung.com
- Official source: Roku Support — How to remove apps from your Roku streaming device · 2026-07-12support.roku.com
Frequently asked questions
Will fixing UI-800-3 delete my profiles or viewing history?+
No. Profiles, My List and viewing history live on Netflix's servers, not on the TV. Signing out, reinstalling the app or even resetting Smart Hub only clears data stored locally — everything reappears once you sign back in.
What's the difference between UI-800-3 and UI-800-3 (100018)?+
The plain code means stored data needs a refresh. Numbered variants identify more specific failures — Netflix publishes a separate help page for each, and some point to hardware or DRM problems rather than stale data. Always look up the exact code shown on your screen.
Does the hidden remote combo (Up, Up, Down, Down…) really work?+
Yes — it's an official Netflix reset menu, not a hack. On devices where the app doesn't show Get Help or Sign out, pressing Up, Up, Down, Down, Left, Right, Left, Right, Up, Up, Up, Up opens a menu with Sign out, Reset or Deactivate options.
Why does UI-800-3 keep coming back?+
Recurring UI-800-3 usually means something keeps invalidating the stored data: a VPN, proxy or custom DNS on the device, outdated firmware, or an aging set-top box. Restore the default connection settings and update the device; if it still returns, the manufacturer needs to check it.
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