Suddenly most users, as well as editors, are presented the .NET error message "Access denied" for one specific page on our intranet. EPiServer access rights are identical to other pages, WebReaders having read access. Where is the problem to be sought?
This reason could be that the page you are trying to display has a listing of some kind (newslist etc), and in the listing there is a page which has been deleted and moved to the recycle bin (to which webreaders do not have access). This will cause the whole container page to display "access denied".
The solution is to check the IIS log to identify which page causes the problem (you will see the page ID in the URL), and then check that page.
Regards, Andrea