By Wayne Brill
This Login method used to log in to the Vault does not support a read-only login.
Autodesk.DataManagement.Client.Framework.Vault.Forms Namespace > Library Login Method
To log in read only you could use:
Autodesk.DataManagement.Client.Framework.Vault.Services Namespace > IVaultConnectionManagerService Interface > LogIn Method
Logging in this way adversely effects the Vault Browser control. Instead of the getting the icons in the icon column you get text with the ImageInfo type. (this behavior has been reported to Vault engineering).
The solution is to Initialize the library before logging in by making this call: