Add a trusted file location
- Go to 'Central Administration' home page -> click 'Application Management' tab -> in the 'Office SharePoint Server Shared Services' section, click 'Create or configure this farm's shared services', You're in the 'Manage this Farm's Shared Services' Page.
- Click 'SharedServices1(Default)', it takes to the 'Shared Services Administration: SharedServices1' home page, in the 'Excel Services Settings' section, select 'Trusted file locations' and click 'Add Trusted File Location'.
