Ask three questions first
- 01Is the only working device on WiFi or Ethernet, and has it remained online continuously?
- 02Do other devices fail to join WiFi, or join WiFi but show no internet? Those are different layers.
- 03Was a router swapped, a second router added, a cable moved, or a device plugged into a WAN port?
A low-risk separation test
Avoid restarting everything at once. Leave the working device as-is, test another device beside the main router, and if possible temporarily remove recently added extenders, old routers or switches. This separates device, coverage and new-client patterns.
Watch for this: adding a second router casually can create conflicting address allocation, double NAT or partial client failures.
What to record next
Record the main router model, how each working and failing device connects, the exact error wording, recent changes and a photo of the router ports. Do not share account numbers, neighbours' WiFi names or a full address publicly.
Make the sharehouse symptoms clear
Three lines about who works, who does not, and whether each uses WiFi or Ethernet can turn guesswork into a sequence.
Share the symptoms