"The reason your file opened in Protected View is because it came from the internet. The Trust Center flagged it as 'Unknown Territory.' If you want to bypass the security checks, you have to put the file in a Trusted Location—a specific folder on your hard drive that Visio considers 'Safe Ground.' If a file lives there, the guards stand down, and the macros run instantly."
Click the button to open the full configuration panel. Core Features and Security Settings visio trust center
Determines how Visio handles ActiveX controls embedded in diagrams. Options range from disabling all controls to enabling them with safety prompts. "The reason your file opened in Protected View