Problem Description
When switching DGN files an Alert dialog appears stating:
MicroStation must be restarted to load the new workspace configuration. Do you want to restart now?
And you are presented with two options, YES or NO
Reason
Most likely due to a difference in the workspace associated to the DGN file being opened.
Steps to Resolve
Option 1 - Workflow
Option 2 – Managed Workspace
Option 3 –Workspace Profiles
Option 4 –Debug the Workspace