Last year, Microsoft added a basic version of the Visio web app to Microsoft 365, making it available without an extra license for anyone with an Office 365 or Microsoft 365 commercial subscription.

Microsoft has rebuilt its Windows web app store. ... who has been covering all things Microsoft, PC, and tech for over 20 years. ... easier ways to discover new apps, modern web tech stack.

The app is being replaced with a web-based alternative that requires Microsoft 365 and OneDrive logins to continue viewing diagrams for free (or you can pay for a subscription).