What should you do?

You have an on-premises Exchange 2010 organization. All clients use Outlook 2007 SP1. You enable online archive mailboxes in Exchange Online for several users.

The users are unable to access the online archive mailboxes in Microsoft Outlook.

You need to ensure that users can access the online archive mailboxes in Outlook.

What should you do?
A . Apply Outlook 2007 SP2 and all related updates.
B . In the Office 365 admin center, add the users to the Global Administrators group.
C . Instruct the users to access the online archive mailboxes by using Outlook Web App.
D . Delete and recreate the users’ Outlook profiles.

Answer: A

Explanation:

Users must use Outlook 2010, Outlook 2007 SP2, or Outlook Web App to access the cloud-based archive mailbox.

References:

https://technet.microsoft.com/en-us/library/hh529934(v=exchg.141).aspx