When the health status of an item changes from good to a suspect or bad state, you can look at the specific item and check the online help for suggested remedies.
Access the Server Health page.
Look for the specific health item that has changed status.
View the information for the item that has changed by clicking theicon for the item.
This information outlines the specific health criteria (thresholds) for green, yellow, or red statuses in that component. It also provides suggestions in some cases for what might be going wrong in that component if a yellow or red indicator is displayed.
Perform the recommended or appropriate action for the health item that has changed.