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Kill a live Microsoft Office 365 session

Posted on 2016-08-20
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Last Modified: 2016-10-13
Logged on to Microsoft Office 365 at Starbucks, but forgot to log off and left.  How do I get that session logged off?
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Question by:dztdagll
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by:Vasil Michev (MVP)
Vasil Michev (MVP) earned 500 total points
ID: 41763584
Generally speaking, you cant, at least not for all services. For SharePoint Online/ODFB, you can use the following cmdlet:

Revoke-SPOUserSession -User baduser@domain.com -Confirm:$false

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For the rest of the services, you either need to disable them temporary or simply change your password.
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by:dztdagll
ID: 41763595
Thanks for getting back to me so quickly.  I'm shocked that Microsoft doesn't have a way of doing this given that people often forget to log off!

If i change the password, does that connection disconnect immediately?  if not, how long until it does?
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LVL 42

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Vasil Michev (MVP) earned 500 total points
ID: 41763606
The reality of modern applications is that access is cached in many forms, both by the server and the client. In the case of O365 the access token you get can live for several hours. Changing password can revoke the token, but it depends on many factors. The default timeouts are listed here: https://support.office.com/en-us/article/Session-timeouts-for-Office-365-37a5c116-5b07-4f70-8333-5b86fd2c3c40
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Author Comment

by:dztdagll
ID: 41763611
I don't know whether you work for Microsoft or not, but this is a big problem.  Users log on to their email from all different kinds of locations.  They cannot be depended on to logoff.   i don't think I'll be moving my users to Office 365 until I can log them off from an admin portal or something....

Very helpful information.  Thank you so much!
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