Trust access to the VBA project object model - Disallow or allow programmatic access to the Microsoft Visual Basic for Applications ...

Trust access to the VBA project object model - Disallow or allow programmatic access to the Microsoft Visual Basic for Applications (VBA) object model from an automation client. This security option is for code written to automate an Office program and manipulate the VBA environment and object model. It is a per-user and per-application setting, and denies access by default, hindering unauthorized programs from building harmful self-replicating code. For automation clients to access the VBA object model, the user running the code must grant access. To turn on access, select the check box.