When accessing a sharepoint site on our intranet some users see a popup box asking them to enter their credentials. When they enter credentials the box reappears. After several attempts they will see an error 410- unauthorized access.
In our environment we have two domains, say Lemon and Peach. Users in the Peach domain can always access sharepoint OK. Users in the Lemon domain can only access sharepoint from a Lemon domain PC. eg
Lemon OK OK
Peach Fail OK
Can anyone give some clues about how to solve this?