Sadly, this tool was removed some time ago. Even so, it is possible to create a detailed network diagram using only Windows 11 and Microsoft Office (including tools such as Excel and Visio).

A list of free Microsoft Visio alternative software to prepare complex diagrams includes Kivio, Graphviz, Inkspace, Open Office Draw, and DIA Diagram Editor.

Microsoft recently made some significant enhancements to its Visio add-in for Excel, enabling users to create Visio diagrams from within Excel. Here's how it works.