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Is there a way to see who edited and what they edited in a users mailbox/account in Office 365? <br />
Trying to see if there's a history of someone changing a users license to something else causing havoc. <br />
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I just had two users say that they were using O365 for months, then couldn't earlier, and found that their license had been changed. <br />
<br />
Thanks in advance.
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Is there a way to see who edited and what they edited in a users mailbox/account in Office 365? 
Trying to see if there's a history of someone changing a users license to something else causing havoc. 

I just had two users say that they were using O365 for months, then couldn't earlier, and found that their license had been changed. 

Thanks in advance.

Office 365 Logging Account Changes

Office 365 is a group of software plus services subscriptions that provides productivity software and related services to its subscribers. Office 365 allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. Office 365 includes e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. All of Office 365's components can be managed and configured through an online portal; users can be added manually, imported from a CSV file, or Office 365 can be set up for single sign-on with a local Active Directory using Active Directory Federation Services.

Microsoft 365

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.