https://helpforum.sky.com/t5/Broadband/WiFi-not-working/m-p/5194979#M547739 <P><a href="https://helpforum.sky.com/t5/user/viewprofilepage/user-id/4596348">@Kaos25</a>&nbsp;the red light on the ONT means the unit has lost its optical signal. Checck that the green fibre plug is secure if it is and the line is still down after an hour runnthe Service Checker in the My Sky app using a mobile connection. Thstvshould have picked up the lost connection and run you through some tests before offering to book an engineer to sort tge issue.</P> Wed, 21 Jan 2026 08:30:01 GMT Chrisee 2026-01-21T08:30:01Z https://helpforum.sky.com/t5/Broadband/WiFi-not-working/m-p/5194974#M547735 The WiFi is not working the fiberoptic box has a red light on it and the WiFi box also has a red light on, I have tried reset this but it has still failed to work, it has been down for about an hour Wed, 21 Jan 2026 08:15:57 GMT https://helpforum.sky.com/t5/Broadband/WiFi-not-working/m-p/5194974#M547735 Kaos25 2026-01-21T08:15:57Z https://helpforum.sky.com/t5/Broadband/WiFi-not-working/m-p/5194979#M547739 <P><a href="https://helpforum.sky.com/t5/user/viewprofilepage/user-id/4596348">@Kaos25</a>&nbsp;the red light on the ONT means the unit has lost its optical signal. Checck that the green fibre plug is secure if it is and the line is still down after an hour runnthe Service Checker in the My Sky app using a mobile connection. Thstvshould have picked up the lost connection and run you through some tests before offering to book an engineer to sort tge issue.</P> Wed, 21 Jan 2026 08:30:01 GMT https://helpforum.sky.com/t5/Broadband/WiFi-not-working/m-p/5194979#M547739 Chrisee 2026-01-21T08:30:01Z