AT&T Gateway internet light red Light — Meaning & Fixes
internet light red on AT&T Gateway: The internet LED on the AT&T Gateway is red, meaning the device has a local network but cannot reach the internet through AT&T Internet..
The internet LED on the AT&T Gateway is red, meaning the device has a local network but cannot reach the internet through AT&T Internet.
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Most likely causes
No internet signal from AT&T Internet
The modem/gateway upstream is down
A AT&T Internet outage or account issue
The AT&T Gateway is not logged into AT&T Internet
Try this first
Restart the AT&T Gateway (unplug 30 seconds)
Verify the upstream modem/gateway is online
Check AT&T Internet outage status in the Smart Home Manager app app
Log into the AT&T Gateway admin page and confirm the WAN connection