eufy Security Cameras Not Recording or Streaming

Identifying the Issue

When your eufy Security Floodlight Cam E340 is not recording events or fails to stream live video, you may encounter a "Device Offline" status in the eufy Security app, a blank or buffering live view, missing motion event clips in the timeline, or the floodlights not activating on motion. The E340 connects directly to your Wi-Fi network (supporting both 2.4 GHz and 5 GHz) and records locally to a microSD card or to the eufy HomeBase if you have one. Issues can stem from power, network connectivity, storage, or camera settings.

Common Causes

• Power supply interrupted: Since the E340 is hardwired to your home's electrical system, a tripped breaker, loose wire connection in the junction box, or someone turning off the wall switch cuts power entirely.
• Wi-Fi signal weakness: The camera is mounted outdoors, often far from the router. Exterior walls, distance, and interference can degrade both 2.4 GHz and 5 GHz signals to unusable levels at the mounting location.
• MicroSD card failure: If the camera records to a local microSD card and the card is full, corrupted, or improperly formatted, new recordings cannot be saved even though the camera is online and detecting motion.
• Motion detection disabled or misconfigured: Detection zones that exclude the monitored area, sensitivity set too low, or the detection mode set to "human only" when you want all-motion recording can cause missed events.
• Firmware bug: Occasionally, a firmware update introduces recording or streaming regressions. Rolling back is not typically possible, but eufy usually patches issues in subsequent updates.
• Night vision conflict: The E340 has both infrared and color night vision modes. If the wrong mode is selected, the camera may appear to record black footage or the floodlights may not activate as expected.

Step-by-Step Fixes

1. Verify power: Check that the breaker controlling the outdoor light circuit is on and that the wall switch is in the on position. The E340 needs continuous power. If the camera's status LED is off, the issue is electrical. Turn off the breaker, open the junction box, and check all wire nut connections — tighten any that are loose and ensure black-to-black, white-to-white, and ground connections are secure.
2. Test Wi-Fi signal at the camera: Stand near the camera with your phone and check your Wi-Fi signal strength. If it is weak, switch the camera from 5 GHz to 2.4 GHz in the eufy Security app (2.4 GHz has better range through walls). Alternatively, add a mesh Wi-Fi extender inside near the exterior wall where the camera is mounted.
3. Check the microSD card: In the eufy Security app, go to the camera settings and look under "Storage." If the microSD card shows as unreadable or full, remove the card, back up any needed footage on a computer, and reformat the card as FAT32 (for cards up to 32 GB) or exFAT (for 64 GB and above). Reinsert it and verify the app detects it.
4. Review motion detection settings: Open the camera settings in the eufy Security app. Verify motion detection is enabled, sensitivity is set to 7 or higher for outdoor use, and the activity zones cover the areas you want monitored. Try switching between "All Motion" and "Human Only" modes to see which captures events in your environment more reliably.
5. Fix streaming issues: If live view buffers or fails, reduce the stream quality in the camera settings from 3K to 2K or 1080p. Close and reopen the eufy Security app. If the problem persists, power-cycle the camera by turning off the breaker for 30 seconds and restoring power.
6. Update firmware: Check for firmware updates in the camera settings. If an update is available, install it while the camera has a stable Wi-Fi connection. Updates often resolve recording and streaming bugs introduced in previous versions.
7. Reset the camera: Use the included pin tool to press and hold the reset button on the camera body for 10 seconds. The camera will reboot and enter setup mode. Re-add it in the eufy Security app and reconfigure all settings.
8. Check floodlight and night vision settings: If the floodlights do not activate, verify the floodlight mode is set to "Motion Activated" and the brightness is above zero. For night vision issues, set the camera to "Color Night Vision" mode if you want the floodlights to illuminate the scene, or "Infrared" for silent black-and-white recording without visible light.

When to Contact Support

Contact eufy support if the camera receives power (LED on) but consistently fails to connect to any Wi-Fi network after factory reset, if the pan and tilt motor does not respond, or if recordings are persistently corrupted across multiple microSD cards. Have your camera's serial number, firmware version, and a description of the wiring setup ready for support.

Prevention Tips

Use a high-endurance microSD card rated for continuous recording — standard cards degrade quickly under the write-heavy workload of a security camera. Check the junction box wire connections annually, as temperature cycling can loosen wire nuts. Keep the camera's firmware updated. Assign the camera a static IP in your router to prevent DHCP-related disconnections. Clean the camera lens and floodlight covers quarterly to maintain image clarity and light output.