Blink Sync Module Authentication Failed – What To Do

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The Blink sync module is a key component of the Blink home security camera system. It wirelessly connects Blink cameras to the internet and allows you to view camera footage remotely.

Blink users encounter a common issue: the “blink sync module authentication failed” error message. This indicates that the sync module is having trouble communicating with Blink’s servers to authenticate and validate the device. Users can try several potential causes and solutions for this problem.

What Causes the Authentication Failure On Blink Sync Module?

There are a few common reasons why a Blink sync module may fail to authenticate:

  • Outdated firmware – Blink periodically releases firmware updates for the sync module to fix bugs, improve performance, and enhance security. Authentication issues can occur if the module doesn’t have the latest firmware.
  • Connectivity problems – The sync module needs a consistent internet connection to maintain contact with Blink servers. Connection drops, interference, or weak WiFi signals can disrupt this communication.
  • Damaged/faulty device – If the sync module hardware has any physical damage or electronic faults, authentication failures may happen due to device errors.
  • Server outages – Large-scale outages of Blink’s backend servers can temporarily impact the sync module’s ability to authenticate. These are usually resolved quickly.

How to Fix Blink Sync Module Authentication Failure

If you encounter the authentication failure message, there are steps you can take to get your Blink system back online:

  • Update firmware – Go to Settings > Sync Module > Firmware Update in the Blink app to download the latest firmware. Allow time for an update to complete.
  • Check internet connection – Ensure the sync module’s WiFi signal is strong. Move it closer to the router if a signal is weak. Alternatively, connect via Ethernet cable for more reliable connectivity.
  • Power cycle devices: unplug the sync module and routers/modems for 30 seconds. Plug back in and allow time to reboot and reconnect.
  • Replace sync module – If the module is damaged and rebooting/firmware updates don’t resolve the issue, you may need a replacement sync module.
  • Verify Blink servers: Check Blink’s Server Status page to see if an outage is causing authentication failure across many devices. Try again later if so.
  • Reset the sync module: As a last resort, factory reset the sync module using the pinhole reset button on the back. This will clear all device connections.
  • Contact support: If the above steps don’t fix the issue, reach out to Blink Customer Support for troubleshooting help. Provide error details.

Diagnosing the Underlying Issue Of Blink Sync Module Authentication Failure

When trying to resolve a sync module authentication failure, also look into these factors to identify the root cause:

  • Check the sync module status lights: solid green = connected; solid amber = poor connection; blinking amber = startup mode. This helps assess connectivity.
  • Note when an error occurs: Does the failure happen at certain times of the day or during certain usage conditions? This can indicate an underlying issue.
  • Review the router and internet connection – Check for weak WiFi signals, interference from other devices, or ISP connection drops that could impact the sync module’s connectivity.
  • Test other devices on the same network. Do other smart home devices that rely on internet connectivity also have issues? If so, broader network problems may be present.
  • Inspect sync module physical condition – Look for any damage, bent pins, frayed cables, etc. that point to hardware defects impacting connectivity and authentication.

Preventing Authentication Failures On Blink Sync Module

Once you resolve a sync module authentication failure, some tips to avoid future issues include:

  • Position the sync module closer to a wireless router for optimal WiFi strength.
  • Keep the device away from electrical devices or appliances that could cause interference.
  • If using WiFi, switch to a wired ethernet connection for maximum reliability.
  • Regularly update the sync module firmware whenever new versions are available.
  • A surge protector or UPS battery backup protects the device from power issues.
  • If problems recur, contact Blink to request a replacement sync module.

You can quickly get your Blink security cameras back online by identifying the cause of any Blink sync module authentication failures and taking corrective troubleshooting steps. Paying close attention to the module’s connectivity, hardware condition, and firmware status can help avoid future issues with the important Blink component.

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About James Beetie

James - a self-confessed nerd - has owned smart home equipment for close to a decade, and he loves communicating the best ways of setting them up... and resolving the various bugs and issues that you'll no doubt come across!