Originally posted in community support, my bad (Can be deleted)!
I’m sure this is a daft setting I’ve missed somewhere, but I can’t get CMS logins to work on the second domain of a MSM site. Site works fine and cms logins for main site work fine, what did I miss? (Group permissions all look correct, but none of my groups seem to work, so I’m sute it’s somehting else)
Error is “You are not authorised to perform this action”
This is becoming an urgent issue for me as I have all teh users of one website not able to login to the cms - eek!
Resolved, turned out my system/index.php file wasn’t using the correct config file!