Diagnostics.hostVersion property (JavaScript API for Office v1.0)

JavaScript API for Office v1.0

Gets a string that represents the version of either the host application or the Exchange Server.

Last modified: June 16, 2014


A string that represents a version number, depending on the current host application.

If the mail app is running on the Outlook rich client, the hostVersion property returns the version of the host application, Outlook. In Outlook Web App, the property returns the version of the Exchange Server. An example is the string "15.0.468.0".

Supported clients

Outlook 2013, Outlook 2013 RT,Outlook Web App and OWA for Devices


Outlook-15.js, OutlookWebApp-15.js



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