Is O365 Click to run + ADFS for SSO acting as it should?

I am curious to know how Click to Run of Office 365 and the sign in is acting as it is supposed to?
To me it looks like my SSO is working properly.
I enter my user name and I do not need to enter in my password, but is it also supposed to prepopulate the user name when I am using a domain computer.

Here is what I am getting when I click "Sign In".

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yo_beeDirector of Information TechnologyAsked:
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Jackie ManCommented:
You are correct and you should have deployed office 365 app using shares computer activation and you will only need to sign on to your domain and no need to sign on to office 365 app.

Click to run installer is user-based licence and when you logon with your Microsoft Account on your first use of Office 365 apps, you do not need to sign on to the apps again.

The signin you see is not related to Office 365 apps. It is just a logon to OneDrive for Business online storage for your document only.
yo_beeDirector of Information TechnologyAuthor Commented:
Thanks Jackie.

That makes sense, but why doesn't it prepopulate the sign in for One Drive?

I do not think I installed this as a shared computer activation.

   <Add OfficeClientEdition="32" Channel="Current"> 
    <Product ID="O365ProPlusRetail"> 
     <Language ID="en-us" /> 
	 <ExcludeApp ID="Access" />
   <Display Level="Full" AcceptEULA="TRUE" />

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Jackie ManCommented:
Do you have Azure AD also?

Sign on to the Office 365 apps and sign in to the cloud service are two different tasks.

Normally, most office 365 deployment will only do DOW for Office 365 apps and not on cloud service as not all users will prefer to use onedrive as their primary location for document. It will be more user friendly to give back the choice to the users.

You can make the signin automatic but there are lots of works and most office 365 administrator will just ask the user to do it on their own as it is only a one time procedure for signin.
yo_beeDirector of Information TechnologyAuthor Commented:
We do have Azure AD (O 365 E3).
yo_beeDirector of Information TechnologyAuthor Commented:
This explained it.

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