Your Echo device is at least eight inches from any walls and windows and not near any sources of possible interference (such as microwave ovens).
You meet the minimum bandwidth requirements for streaming through Alexa. Your Internet connection needs to be at least 512 Kbps (0.51 Mbps).
The device with the Alexa app is not connected to a wired network (for example, a laptop with an Ethernet connection).
Other devices (such as tablets or mobile phones) can connect to your network. If not, contact your Internet service provider, network administrator, or the person who set up your network for assistance.
(Dual-band routers only) The network name (or SSID) is different for both the 2.4 GHz and 5 GHz band.
If you have a firewall on your network, check to see if these UDP ports are open for outgoing traffic: 123, 443, 4070, 5353, 40317, 49317, and 33434.
If you've checked all these things, and still having trouble connecting, then follow these options:
OPTION 1: Change network configuration:
Open ports.
* Output TCP: 80, 8080, 443, 40317, 67, 68
* Output UDP: 53, 123, 4070, 40317, 49317, 33434, 1900, 5000, 5353
* Input TCP: 8080, 443, 40317
* Input UDP: 53, 67, 68, 1900, 50000, 5353, 33434, 49317, 40317, 4070
Add the Media Access Control (MAC) address for each Echo device
You may need to register the Echo device's MAC address to your router's list of approved devices, so that it stays connected.
The MAC address for each Amazon Echo is found in the signed in Alexa app (or at alexa.amazon.com) > Menu > Settings > select the Device > scroll to the end to see the MAC address.
OPTION 2: Reset your Echo device to its factory defaults.
You can sometimes resolve intermittent problems with your Echo device when you reset it.
When you reset your Echo device, any device settings (such as your Wi-Fi network information) need to be re-entered when you re-register your device.
To reset your Echo:
1. Use a paper clip (or similar tool) to press and hold the Reset button. The Reset button is located at the base of your Echo device. After you press and hold the Reset button, the light ring on your Echo device turns orange, and then blue.
2. Wait for the light ring to turn off and then turn blue again. When the light ring turns orange, your Echo device enters setup mode.
3. Open the Alexa app to connect your device to a Wi-Fi network and try to register your device again.
To reset your Echo Dot:
1. Press and hold the Microphone off and Volume down buttons at the same time until the light ring turns orange (about 20 seconds). Then the light ring turns blue.
2. Wait for the light ring to turn off and on again. The light ring then turns orange again, and your Echo device enters setup mode.
3. Open the Alexa app to connect your device to a Wi-Fi network and register it to your Amazon account.
If you continue to have trouble connecting your Echo to Wi-Fi, you can reach Amazon Device Customer Support by clicking link: https://www.amazon.com/help/contactus
OPTION 3: Setup a dedicated Wifi network that is hidden
Create a dedicated wifi network for Alexa devices: a hidden wifi network channel (non-broadcasting):
In the router configuration web page, create a second wifi network with WEP or WPA2 security, but disable the broadcasting of SSID.
Have Alexa connect to this hidden network through the Alexa setup process.
Once Alexa is connected, find the MAC address and the IP address in the router configuration web page.
Assign the IP address as a static IP address for that MAC address, in the router configuration web page.
OPTION 4: Restart your Echo device and network hardware
You can restart your Echo device, Internet modem, and router to resolve most intermittent Wi-Fi issues.
1. Turn off your router and modem, and then wait 30 seconds.
2. Turn on your modem, and then wait for it to restart.
3. After you restart your modem, turn on your router, and then wait for it to restart.
4. While your network hardware restarts, unplug the power adapter from your Echo device for three seconds, and then plug it back in.
After you restart your Echo device and network hardware, try to connect to your Wi-Fi network again.
Bandwidth and usage:
Each Echo does not use any significant data throughput when it is idle or in standby, approximately 2kb every 5-10 seconds, or between 4MB and 5MB per day. When a short request is made, like “what’s the weather” it uses less than 1MB. When a longer request is made, or music is streamed on the device, it uses more bandwidth, similar to streaming on a smartphone. In a typical classroom environment, 100MB per day might be a good estimate, but will vary based on activity and usage.