'Microsoft.Office.Server.Internal.UI.SharedServicesAdminDefaultPage' is not allowed for this page

2009, Feb 06

Yesterday,  I wanted to visit my SSP admin page, but for some reason, i got the following error:

"The base type 'Microsoft.Office.Server.Internal.UI.SharedServicesAdminDefaultPage' is not allowed for this page"

I had, and still have, no clue what caused the problem, but I solved it by adding the following line to the web.config: