Self-hosted runner registration

Hi there ,

I am very new at using the github ecosystem so apologies if this is a very basic question.

Trying to add a self-hosted runner which is behind a proxy but I keep getting :

The user ‘System:PublicAccess;aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa’ is not authorized to access this resource.

Am I missing something obvious?

Thanks!

Sorted. It was a proxy issue.