Microsoft Visio 2019 Professional (64-bit) remains a highly capable, industry-standard diagramming tool for users needing a perpetual (non-subscription) license, providing a stable, offline-capable environment for creating complex flowcharts, network diagrams, and floor plans
Visio 2019 shares the same "bitness" as your installed Microsoft Office suite. If you have Office 2019 64-bit installed, you must use the 64-bit Visio. Attempting to mix bitness will result in a fatal installation error.
In the installation window, select to specifically choose the 64-bit version and the offline installer . Volume Licensing (Business/IT Pro) :
Microsoft Visio 2019 is a powerful diagramming tool that allows users to create professional-looking diagrams and visualizations. It is part of the Microsoft Office suite and offers a range of features and tools to help users create complex diagrams with ease. With Visio 2019, users can create diagrams from scratch or use pre-built templates to get started quickly.