Kasa Smart Plugs and Power Strips Not Working

Identifying the Issue

When your Kasa Smart Plug Mini EP10 or Kasa power strip stops working, the symptoms can vary. The device may show as "Offline" in the Kasa Smart app, the physical button may not respond, the connected appliance may not turn on or off through app or voice commands, or the LED indicator may be off entirely. For power strips like the HS300 or EP40, individual outlets may stop working while others continue to function normally, or the entire strip may become unresponsive.

Common Causes

Smart plugs and power strips can stop working due to several common factors:

• WiFi network interruption caused by router restart, ISP outage, or network reconfiguration
• The plug or strip has been unplugged or the outlet it is connected to has lost power
• The internal surge protector on a power strip has tripped due to a power spike
• Overloaded outlet — the connected devices exceed the plug's rated wattage
• The TP-Link cloud service is down, preventing remote app control (local physical buttons should still work)
• Firmware corruption after a failed update or unexpected power loss during an update
• WiFi password or router SSID was changed, and the plug still has the old credentials

Step-by-Step Fixes

1. Check the physical button: Press the physical power button on the plug or strip. If the device turns on and off manually but not through the app, the issue is WiFi connectivity. If the button does not respond at all, the issue is power-related.
2. Verify the power source: Make sure the wall outlet is working by plugging in another device. For power strips, check if the surge protector has tripped — some strips have a reset button or a status LED that indicates the surge protector state.
3. Unplug and replug: Disconnect the smart plug or power strip from the wall outlet for 10 seconds, then plug it back in. This performs a hard reboot of the device's WiFi module and often fixes temporary glitches.
4. Check your WiFi network: Open the Kasa app and see if other devices are online. If all Kasa devices are offline, restart your router. If only the plug or strip is offline, the issue is device-specific.
5. Restart your router: Power cycle your router by unplugging it for 30 seconds and plugging it back in. Wait 2 to 3 minutes for the router to fully restart, then check if the plug reconnects.
6. Factory reset the device: Press and hold the power button on the plug for about 5 seconds until the LED blinks amber and green. For power strips, use the dedicated reset button. After resetting, set the device up again from scratch in the Kasa app.
7. Check for firmware updates: Once reconnected, go to the device settings in the Kasa app and check for available firmware updates. Install any pending updates to fix known bugs.
8. Reduce the load: If the device keeps shutting off, the connected appliances may be drawing too much power. Check the wattage ratings on your devices and ensure the total does not exceed the plug's or strip's rated capacity (usually 1800W for the EP10 and similar limits for power strips).

When to Contact Support

Contact TP-Link support if the device will not power on at all despite a working outlet, if it makes buzzing or crackling sounds, if it feels very hot to the touch even with low-wattage devices connected, or if it enters a reset loop where it continuously blinks without ever connecting. These may indicate a hardware failure covered under warranty. TP-Link support is available through the Kasa app or at tp-link.com/support.

Prevention Tips

To keep your Kasa plugs and power strips working reliably, never exceed the rated wattage capacity. Avoid connecting high-draw appliances like space heaters or window air conditioners to smart plugs. Keep the Kasa app and device firmware updated. If you change your WiFi password, plan to reset and re-pair all smart plugs afterward. For power strips, use them in well-ventilated areas and avoid stacking multiple power strips together. A mesh WiFi system with strong 2.4 GHz coverage is the best way to prevent recurring connectivity drops across all your smart home devices.