This is an article for a Web Portal showing grey screen error.
Web Portal is showing grey screen after I log in.
This is caused by silverlight installed on the browser where portal is being used.
Uninstall currently installed Silverlight and then install older version of silverlight such as 5.0.x. Then when you log back into portal then it will ask you to update silverlight and you update it when you get that message. Somehow installing latest version directly causing this issue but if you install older version first and then let it update when asked will solve it.
- Web Portal 4x