No internet

[Parker31]

My internet has gone off even though it all says it's fine online. 

I've checked my box and the openreach box that's comes in through the side of the house has a red light on which it's doesn't normally. It's the PON outlet that has a red light. 

[caesarome]

@Parker31 

Try running the line test here to see if this fault is found:
https://www.sky.com/help/articles/broadband-diagnostic-start

You can also run the test via the MySky app on a mobile data connection.

After this has finished and if it reports back all is good click on broadband to run an updated test. If you get amber or red please follow the on screen instructions.

If this is of no help give Sky a call to report it to them.