MediaBin Deployment Agent CopyFile Error

System

I am running 4.6 Build 25 of the Deployment Agent and have started getting the message:

CopyFile: Connect: Error logging on to share \\servername\Target. Multiple connections to a server or shared resource by the same user, using more than one user name, are not allowed. Disconnect all previous connections to the server or shared resource and try again. (80040000). (80040000)

Don't see anyone else connected or any files being left open by the user running the DA.

Any ideas?