The operation on mailbox failed because it’s out of the current user’s write scope

When you want to change an email address on a Mailbox in Office 365 you get the following error message:

The operation on mailbox “<mailbox>” failed because it’s out of the current user’s write scope. The action ‘Set-Mailbox’, ‘EmailAddresses’, can’t be performed on the object ‘Stacey Brown’ because the object is being synchronized from your on-premises organization. This action should be performed on the object in your on-premises organization.

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This issue is caused by the fact you’re synchronizing user objects from a local Active Directory using DirSync or WAADSync, and you want to change properties in Office 365. This is not possible since the Source of Authority is your local Active Directory, and not Windows Azure Active Directory. This means you have to change all the user’s properties in Active Directory, including his email address.

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Install Exchange 2013 Cumulative Update 9

Microsoft has released Exchange 2013 CU9, three months after the release of CU8. Microsoft has made a solid Cumulative Update this time (just like CU8 by the way) and during testing not much issues were found.

There aren’t any new features in this Cumulative Update, and personally I don’t expect any new features anymore in future Cumulative Updates either. All development efforts at Microsoft are currently targeted towards Exchange Server 2016.

The official announcement of CU9 can be found on The Exchange Team Blog, CU9 itself can be downloaded from the Microsoft Download Center, just as the accompanying CU9 UM Language Packs.

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The Secure Mail Certificate on server HYBRID01 is not bound to the SMTP Service

While configuring an Exchange 2013 organization in a hybrid scenario with Office 365 the Exchange Hybrid wizard stopped and showed the following error message:

Subtask CheckPrereqs execution failed: Configure Mail flow The Secure Mail Certificate on server HYBRID01 is not bound to the SMTP Service at Microsoft.Exchange.Management.Hybrid.MailFlowTask.CheckCertPrereqs()…

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