Permissions Cannot Be Changed

[ksATircpuntbe]

I have following: SBS2008, updated to today. Can create "new folder". Then I go to the security tab to add a user with some extra permissions. When I click "check name" or "ok" it pops up a windows to ask me credentials (i am although logged on with administrator in the domain). After that it pops up a windows with the message the user or the password is not correct. But i am absolutely logged in with administrator, even more, with the domain administrator.

Any idea how this can happen?

A few weeks ago I could do this however. In my opinion nothing was change during these weeks.

 

Thanks for your effort

KurtST

 

 

No answer needed. Problem solved. DNS problem/host