> ## Documentation Index
> Fetch the complete documentation index at: https://support.customtypeone.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Firewall Issue

> WiFi connected but no internet access — common causes and fixes by scenario

SugarPixel Mini/Classic connected to WiFi but can't reach the internet. Find your scenario below.

### Was previously working

Restart your WiFi router, wait 5 minutes, then unplug and replug SugarPixel Mini/Classic. If you use a mesh network or WiFi extenders, restart all nodes. Repeat up to three times.

### Clock sync taking too long (first-time setup)

SugarPixel Mini/Classic requires a successful NTP time sync before it can operate. Try rebooting SugarPixel Mini/Classic first. If on home WiFi and it still persists, do a full internet reboot:

1. Unplug SugarPixel Mini/Classic
2. Unplug your modem and router
3. Plug in the modem, wait 5 minutes
4. Plug in the router, wait 5 minutes
5. Plug in SugarPixel Mini/Classic

### Captive portal (hotels, cafes, public WiFi)

Public networks that require a login screen are not supported — SugarPixel Mini/Classic can't complete the login. Use a **mobile hotspot** instead. See **Mobile Hotspot / Public WiFi** on the [WiFi and Bluetooth](/sugarpixel-mini-classic/wifi-and-bluetooth#mobile-hotspot-public-wifi) page.

### University or college network

The guest or enterprise network may be blocking SugarPixel Mini/Classic. See **University** on the [WiFi and Bluetooth](/sugarpixel-mini-classic/wifi-and-bluetooth#university) page for device registration steps.

### No internet on your network

Your router may be working but your internet connection may be down. Test with another device on the same WiFi network.

### Firewall blocking time servers (school/work IT)

SugarPixel Mini/Classic requires NTP time sync on **port 123** and HTTPS access to CGM servers. See **School / Work** on the [WiFi and Bluetooth](/sugarpixel-mini-classic/wifi-and-bluetooth#school-work) page for the full list of required endpoints to share with IT.


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