Error Message

Error entry in the Dtrace of W3WP:
Error during API Request - GET http://localhost/EnterpriseVault/Dashboard/api/api/site, controller - Site. Exception is - Object reference not set to an instance of an object. 

This XML file does not appear to have any style information associated with it.  The document tree is shown below.

An error has occurred.
Object reference not set to an instance of an object.
System.NullReferenceException
at API.Controllers.BaseAPIController.GetDirectoryDBConnectionString() at API.Controllers.BaseAPIControllerFromDB(String commandText, Action'1 callback, String dbConnectionString, List'1 cmdinputs) 

The EV Dashboard Virtual Directory is not created under the Enterprise Vault Virtual Directory in IIS.

The EV Dashboard Virtual Directory needs to be created manually.
 

1. On the Enterprise Vault Server open the Internet Information Services (IIS) Manager MMC snap-in.

2. Browse to Sites | Default Web Site | EnterpriseVault and notice that the Dashboard Virtual Directory is missing.

3. Right click on the EnterpriseVault site and select the Add Virtual Directory... option. 

4. Put Dashboard as Alias and the Physical path: of the Dashboard folder as {DriveLetter}:\Program Files (x86)\Enterprise Vault\Dashboard, replacing {DriveLetter} with the drive on which EV is installed.

5. The Virtual Directory appears afterwards

6. If the Dashboard Virtual Directory has been created under the EnterpriseVaultAPI Site, right click the Dashboard Virtual Directory under there and remove it so that it only exists under the Enterprise Vault Site.

7. Open the Enterprise Vault Indexing Dashboard URL and verify it is working properly.