Why is my Arlo Pro 5S error code 4?

Common causes include software issues, connectivity problems, and settings misconfigurations. Follow our guide to fix your Arlo Pro 5S.

How do I fix Arlo Pro 5S error code 4?

Start by restarting your device, checking connections, and updating firmware. Our step-by-step guide provides detailed instructions.

When should I call support for my Arlo Pro 5S?

If troubleshooting doesn't resolve the issue, or you encounter persistent errors, contact a certified Arlo technician.

Arlo Pro 5S Error Code 4

If your Arlo Pro 5S security camera is displaying error code 4, you're likely experiencing connection or streaming issues that prevent live viewing, recording, or cloud sync. This error typically indicates a problem with the camera's ability to communicate with Arlo's servers or your local network. The good news is that Arlo Pro 5S error code 4 can usually be resolved with a few targeted troubleshooting steps. Whether you're seeing this error in the Arlo app, during setup, or when accessing recorded footage, this guide will walk you through proven solutions to get your camera back online and functioning properly.

What Causes Arlo Pro 5S Error Code 4?

Arlo Pro 5S error code 4 generally stems from network connectivity problems, server communication failures, or device-specific glitches. Common triggers include weak Wi-Fi signal strength at the camera's location, temporary Arlo service outages, outdated firmware, or corrupted app cache. The error may appear as a pop-up notification, a banner in the live view screen, or a failed recording indicator. Understanding the root cause helps you apply the right fix without unnecessary troubleshooting.

Step-by-Step Troubleshooting for Error Code 4

Check Your Internet Connection: Verify that your home Wi-Fi network is active and stable. Test the connection on another device near your Arlo Pro 5S camera location. If speeds are slow or the signal drops, move your router closer, eliminate physical obstructions, or add a Wi-Fi extender. The camera requires at least 2 Mbps upload speed for reliable streaming.

Power Cycle Your Arlo Pro 5S Camera: Remove the battery from your camera for 10 seconds, then reinsert it firmly until you hear a click. Wait for the LED to blink blue, indicating it's reconnecting to your SmartHub or base station. For wired setups, unplug the power adapter for 30 seconds before reconnecting. This clears temporary memory glitches that trigger Arlo Pro 5S error code 4.

Restart Your Arlo SmartHub or Base Station: Unplug the power cable from your SmartHub, wait 30 seconds, then plug it back in. Allow 2-3 minutes for the device to fully boot and reconnect to your network. The LED should turn solid blue or purple. A fresh base station connection often resolves server communication errors affecting multiple cameras.

Update the Arlo App and Firmware: Open your device's app store and install any pending Arlo app updates. Then open the Arlo app, go to Settings > My Devices, select your Pro 5S, and check for firmware updates. Install any available updates and keep the camera powered during the 10-15 minute process. Outdated software frequently causes compatibility errors with Arlo's cloud servers.

Clear App Cache and Re-log: On Android, go to Settings > Apps > Arlo > Storage > Clear Cache. On iOS, offload and reinstall the Arlo app. Log back into your Arlo account with your credentials and re-enable any custom modes or rules. Corrupted cached data can misreport camera status and generate false error code 4 messages.

Check Arlo System Status and Re-sync Camera: Visit status.arlo.com to confirm there are no ongoing service outages. If services are operational, try removing and re-adding your camera: go to Settings > My Devices, tap the Pro 5S, select Remove Device, then use the app to sync the camera again by pressing and holding the sync button until the LED blinks blue.

Warning: Removing your camera from the app will delete any unsaved local recordings stored on a microSD card if not backed up. Ensure important footage is downloaded to your device or cloud storage before proceeding with a factory reset or device removal.

Advanced Fixes for Persistent Error Code 4

If basic troubleshooting doesn't resolve Arlo Pro 5S error code 4, consider these advanced steps. First, verify your router isn't blocking Arlo's required ports (443, 80, 123, 37). Check your firewall or parental control settings for restrictions on IoT devices. Second, switch your camera from 5GHz to 2.4GHz Wi-Fi if your router broadcasts both bands—the 2.4GHz band offers better range through walls. Third, perform a factory reset by holding the reset button for 10 seconds until the LED flashes amber, then set up the camera as new. Finally, if you use a VPN or proxy on your mobile device, disable it temporarily, as these can interfere with Arlo's geolocation and server authentication.

Frequently Asked Questions

Does error code 4 mean my Arlo Pro 5S is defective?

Not necessarily. Error code 4 is most commonly caused by network or server issues rather than hardware failure. Only after completing all troubleshooting steps, including firmware updates and factory reset, should you consider a warranty claim or replacement.

Why does error code 4 appear only at night on my Arlo Pro 5S?

Night vision and spotlight features increase bandwidth usage, which can expose weak Wi-Fi signals that suffice during daytime streaming. The infrared LEDs also draw more power, potentially causing brief connectivity drops if your battery is below 20%.

Will I lose my subscription recordings if I remove and re-add my camera?

No. Cloud recordings tied to your Arlo Secure subscription remain in your library for the retention period specified in your plan. However, local recordings on a microSD card may become inaccessible if the card isn't properly ejected or reformatted during re-setup.

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