How to Fix File Type Blocked by Trust Center in Visio 2019
Question details
The user is unable to open specific files or drag stencils onto a page in Visio 2019 because the file type is blocked by Trust Center security settings, and the Open behavior options appear to be grayed out.
- Product
- Microsoft Visio 2019
- Device & OS
- not provided
- Scenario
- Opening legacy files or dragging specialized stencils onto a Visio workspace.
- Observed behavior
- Visio triggers a security block preventing the action, and the Open behavior options in the Trust Center are disabled, preventing the user from bypassing the block globally.
Ensure you have administrative or standard permissions to modify Microsoft Visio's internal settings, and verify that the file or stencil you are attempting to use comes from a safe and trusted source before unblocking it.
Unblock Specific File Types in Visio Trust Center
Modify the File Block Settings to manually clear the blocking restrictions for the exact file format or stencil you need to use.
In Microsoft Visio, the Trust Center may block certain legacy or potentially vulnerable file formats to protect your system. The interface logic can be confusing: a selected (checked) box means the format is actively blocked, while a cleared (unchecked) box permits access.
The global 'Open behavior' options at the bottom of the window are often disabled by design in Visio, meaning you must manage permissions by checking or unchecking individual file types in the list above.
Launch Visio 2019. Click on the 'File' tab located in the top-left corner of the window, and select 'Options' from the bottom of the menu.
In the Visio Options dialog box, click on 'Trust Center' in the left-hand navigation pane. Then, click the 'Trust Center Settings...' button on the right side.
Select 'File Block Settings' from the left pane. Scroll through the list to locate the specific file type or stencil format you are trying to open. Clear (uncheck) the 'Open' and 'Save' check boxes next to that file format to allow access.
Click 'OK' to save your changes and exit the Trust Center. Restart Visio 2019 and attempt to open the file or drag the stencil onto your page again.
Try WPS Office for Your Daily Document Needs
While specialized diagramming requires tools like Visio, for all your daily word processing, spreadsheet, and presentation tasks, WPS Office offers a free, lightweight, and highly compatible alternative to Microsoft Office. Enjoy a familiar interface and seamless document management without expensive subscriptions.
- 1. Download the Installer: Visit the official WPS website and download the free installer for your operating system.
- 2. Install WPS Office: Run the setup file and follow the quick on-screen instructions to install the lightweight suite.
- 3. Open Your Files Seamlessly: Launch WPS Office and directly open or drag-and-drop your existing Microsoft Office documents into the workspace.
Frequently Asked Questions
Why are the Open behavior options grayed out in Visio 2019 Trust Center?
Microsoft disabled the global 'Open behavior' radio buttons at the bottom of the File Block Settings window by design in Visio 2019. To manage file access, you must check or uncheck the boxes for individual file types in the scrollable list above.
What does checking a box in the Trust Center File Block Settings do?
Checking an 'Open' or 'Save' box in these settings actively restricts that specific file format, preventing Visio from opening or saving it. To allow a file to open normally, the corresponding box must be unchecked.
Why does dragging a stencil onto my Visio page trigger a block?
Visio treats stencils (such as .vss or .vssx files) as standalone document formats. If the stencil's specific file type is checked in the File Block Settings, Visio's security protocols will block it when you try to insert or drag it onto a page.
