The Zoom Outlook Plug-In is not the same as the Zoom O365 Add-in, which is referenced in the following article:
Zoom - How do I sign into the Zoom Add-In for Outlook?

Both of these applications allow scheduling Zoom meetings using Outlook, but installation is required for the Plug-In. 
The Zoom Outlook Plugin can be downloaded here
Zoom Download Center


  • Signing into the Zoom Plug-In for Outlook so that you can schedule a Zoom meeting, or 'Schedule a Meeting' to an existing meeting.
  • When I click the 'Schedule a Meeting' button, I am prompted to sign into Zoom.


On the ribbon tab at the top of Outlook, select the 'Schedule a Meeting' button

A new window will open, and you will be prompted to sign into Zoom. Click the 'Or sign in with SSO' at the bottom of the window

Now enter 'wsu' in the domain filed as shown below, and then click 'Continue'

You will be brought to the WSU sign-in page, scroll down and enter your WSU username and password. Click 'Sign in'

Upon successful authentication, you will see the following window

Close this window, and click the 'Schedule a Meeting' button again. You should now see Zoom meeting details added to your meeting invitation