Problem: (project server 2007 with IIS 7.0 Windows 2008

In Microsoft Office Project Server 2007, you may experience one or more of the following symptoms when you try to access a Web page from Microsoft Office Project Web Access:

• When you try to view the "Project Center" page, you receive an error message that resembles the following:
  

  Project Center cannot access the project(s) you are trying to view. It is most likely that you either don't have the permissions to view the project, another user has deleted this project(s) before you were able to view it or that another user is in the process of publishing the project
  

• When you try to view the "Resource Center" page, you receive an error message that resembles the following:
  

  There was an error loading the page. Please try again by clicking Refresh. If this problem persists, contact your administrator.
  

• When you select a user on the "Manage Users" page, you receive an error message that resembles the following:
  

  An error was encountered in loading the page. Refresh the page, or contact your server administrator if this problem persisttions.
  

• When you try to view an "Edit Custom Field" page, you receive an error message that resembles the following:
  

  The custom field could not be saved due to the following reason(s):
  
  
  An unknown error has occurred
  

Solution:

In: IIS 7.0 Compression Turn off compression for Port 80 and Office Server Web Services and SSP