---
# System prepended metadata

title: How To Fix TP Link Deco Flashing Red Light Issue?

---

# How To Fix TP Link Deco Flashing Red Light Issue?
The TP Link Deco system displays red lights to show that the Deco unit has lost all internet access and cannot establish a link with its primary Deco base station. The issue occurs because of internet service interruptions or user configuration errors or unfastened wires or software malfunctions. You can resolve the problem through straightforward troubleshooting methods which require minimal effort.

**Check Your Internet Connection**

The first step requires you to test your modem's operational status. The modem needs a restart which requires you to unplug it for 30 seconds before plugging it back into the power source. Wait until all modem lights become stable. Your ISP should be contacted if the internet remains unavailable after this step.

**Restart the TP-Link Deco**

The **[TP Link Deco flashing red](https://tplinkdecomeshwifi.com/fix-tp-link-deco-flashing-red-light-issue/)** light problem can be resolved through a system reboot. The user should power down the Deco unit for one minute before powering it back up. The device needs several minutes to establish its connection again.

**Inspect Cable Connections**

The red blinking light will activate when users connect Ethernet cables which have either become loose or suffered damage. The user needs to confirm that all cables between the modem and Deco device have been properly connected.

**[Update Deco Firmware](https://tplinkdecomeshwifi.com/tp-link-deco-firmware-update-guide/)**

Connectivity issues occur because of outdated system software. Users should use the Deco application to find out which system updates are currently available. The user needs to install all available updates and then restart the system.

**Change Deco Placement**

Satellite Deco units lose their connection when they operate beyond their maximum distance from the main unit. The user needs to move the Deco device closer to its primary unit to determine whether the red light will go away.

**[Reset Deco](https://tplinkdecomeshwifi.com/how-to-factory-reset-tp-link-deco/) Device**

The only solution which remains is to perform a complete reset of all Deco settings. The user needs to hold down the reset button on the Deco device until the LED light changes after 10 seconds. The user needs to set up the entire Deco network using the Deco application after this process.

**Conclusion**

The main reason for the TP Link Deco red light issue happens because of problems which affect either the network connection or the device settings. The system can be fixed through system restarts and cable checks and firmware updates and reset operations.