|Personal Blog (free)
|Commercial / School / Non-profit (premium)
|Login / Logout behaviour
A user that clicks the (default) WordPress logout link will also be logged out from Office 365. To achieve this the user will be redirected to a Microsoft logout page so that cookies etc. will be deleted. After doing so successfully, Microsoft will redirect the user back to your website. The default configuration would send the user back to the WordPress login page, but this can be overridden using the Post sign-out URL.
Usage / Example(s)
Enter an absolute URL to the page where user who logged out from your WordPress website and subsequently were redirected to the Microsoft signout page should be redirected.
It seems that Microsoft will only redirect users when the Post sign-out URL points back to the website where the user originated from.