Just a qucik one, what could be the possible cause of error, or where to look for fixing this error.
We got multiple front-ends, and everything is working fine. BUT, on the third WFE users cannot access a sitecollection Y. This sitecollection Y, can be accessed from all the other WFEs, and on the failing WFE users can acccess all other sitecollections besides sitecollection Y.
My logic is not enough to solve this.