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Any particular error messages? For Outlook on the desktop, try clearing any stored credentials, or simply create a new profile. How big is the mailbox in question? If it's over say 15GB, definitely try a new profile and use the &quot;cache slider&quot; to limit the amount of data synced to just a month or so.<br />
<br />
For the iPhone, resetting the account as well. If using the native Mail app, try Outlook for iOS app.
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Tried setting it Outlook profile up on another computer ans still same issue. Strange
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OK, so tell us what exactly is the issue then, error messages, anything? :) Can he connect at all?
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not sure what kind of errors they're getting...how ever this one usually almost always work...granted that's it's restricted to only 1 user and her mailbox is properly provisioned. If these hold true and &nbsp;you can access her email from OWA, do the following:<br />
<br />
1.On computer, clear the credential cache then <b>re-enter</b> the new credentials. If the problem persists, reset the users' profile in the local outlook client. If the problem persists, it has to be with account provisioning then need more details on the error. If this fixes the issue, go to the next step.<br />
2. On the phone, completely remove/delete the email account from the phone mail client app (this includes native or other form of mail client apps), then re-add it the correct credentials.
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Sorry as nothing helped here going to pass on the points here.
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<div class="content wysiwyg-content">
Good Morning,<br />
<br />
I have a user on O365 whos emails are not working on his Outlook 2016 and strangely hi s iphone is also not recieving emails anymore since this morning. <br />
<br />
I reset and unlock his password from AD and synced to O365 but still same issue on both iphone emails and Outlook client. <br />
<br />
OWA is working !! and he is able to send recieve emails there. <br />
<br />
Where do I start troubleshooting from ? <br />
<br />
Thanks<br />
<br />
Nick
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Good Morning,

I have a user on O365 whos emails are not working on his Outlook 2016 and strangely hi s iphone is also not recieving emails anymore since this morning. 

I reset and unlock his password from AD and synced to O365 but still same issue on both iphone emails and Outlook client. 

OWA is working !! and he is able to send recieve emails there. 

Where do I start troubleshooting from ? 

Thanks

Nick

Outlook 2016 client and iphone email issue

The iPhone is a smartphone made by Apple Inc. It and the iPad, along with several other mobile devices from Apple, run on the iOS operating system, which has its own topic, as does the iPad for device-specific questions. Native iOS applications are written in Objective-C or in Swift using the Cocoa Touch frameworks or HTML5 compiled with the help of a package manager such as Adobe PhoneGap; a common IDE is Xcode.

iPhone

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.

Outlook

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.