Such a Visio editor may not necessarily be from Microsoft itself but can be a product from a third-party developer that can efficiently edit Visio files. Furthermore, some Visio online editor apps are also available that enable you to edit Visio files using your favorite web browser. Such a Visio editor may not necessarily be from Microsoft itself but can be a product from a third-party developer that can efficiently edit Visio files. Furthermore, some Visio online editor apps are also available that enable you to edit Visio files using your favorite web browser.
-->Note

Office 365 ProPlus is being renamed to Microsoft 365 Apps for enterprise. For more information about this change, read this blog post.
Symptoms
Consider the following scenario:
- You are running Internet Explorer.
- You have Visio Viewer installed on the computer.
- You try to open Microsoft Office Visio files in Visio Web Access.
In this scenario, when you click Open in Visio, you receive the following error message:
Cause


This issue occurs because Visio Web Access invokes the client application by using the ms-visio:ofv|u|documenturl protocol, but Visio Viewer doesn't support or process this protocol.
Resolution
To resolve this issue, install Microsoft Office Visio.
Status

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Visio Viewer Download
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the 'Applies to' section.
