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Last updated: September 2013
Can’t use the product key with Outlook
If the same product key works for Word, Excel, and PowerPoint, then you probably have the Office for Mac Home and Student edition. This version of Office doesn’t include Outlook.
To use Outlook, you need Office for Mac Home and Business 2011 or Office 365 Home Premium. To get any of these version, go to the Office for Mac site.
Can’t sync Outlook data with mobile devices when on OS X Mountain Lion
With OS X Mountain Lion, Apple no longer maintains active support for Sync Services. You might experience issues, if you are using Sync Services to sync your Outlook data - calendar, contacts, tasks, and notes - with local applications and smart phones, like iPhone, iCal and RIM.
An identity error displays when trying to open Outlook
Email is stuck in the Outbox
Duplicate emails display in Sent Items folder for IMAP accounts
This occurs when both Outlook and the email server are adding copies of the messages to the Sent Items folder after they are sent. To fix this, go to Outlook > Preferences > Accounts > select the IMAP account > Advanced > Folders and select Don't store a copy of sent messages.
Duplicate emails display for Gmail accounts
This is due to a conflict with Gmail's All Mail folder. If you have rules running on your Gmail account, it's recommended that you remove them from Outlook and create them from Gmail's web interface. You can also unsubscribe from the All Mails folder by going to Tools > IMAP Folders > [Gmail] / All Mail and click Unsubscribe.
MobileMe email account does not automatically configure in Outlook for Mac 2011 after the Office for Mac 2011 SP2 update
For MobileMe accounts, use the following settings for the incoming and outgoing servers:
Incoming server: mail.me.com
Outgoing server: smtp.me.com
For iCloud accounts, use the following settings for the incoming and outgoing servers:
Incoming server: imap.mail.me.com
Outgoing server: smtp.mail.me.com
Cannot synchronize Outlook for Mac with calendars and contacts in iCloud account
Outlook for Mac 2011 does not currently support CalDAV or CardDAV. This means that it is not possible to synchronize your iCloud calendar or contacts with Outlook for Mac. However, Outlook for Mac 2011 does support iCloud Mail. For more information, see Microsoft Outlook for Mac 2011 compatibility with Apple iCloud
Cannot synchronize Hotmail folders with Outlook for Mac
Hotmail is available as a POP account type only for Outlook for Mac users and POP connections don't support contacts and folders.
Cannot synchronize Outlook for Mac with calendars in Gmail account
Outlook for Mac 2011 does not currently support CalDAV. This means that it is not possible to synchronize your Gmail calendar with Outlook for Mac.
Cannot import mail from Apple Mail in Mac OS X v10.7 (Lion)
If you are on Mac OS X v10.7 (Lion), you cannot import from Apple Mail into Outlook for Mac 2011.
Outlook for Mac does not support a way to replace signatures
Outlook for Mac does not automatically support a way to replace a signature with another signature in the e-mail message. When you add a new signature in an attempt to replace an old one, Outlook for Mac appends the new signature instead of replacing it. To replace the signature, you must manually delete the original signature from the e-mail message.
Cannot change the color of shared calendars in Outlook for Mac
It's not possible to change the color for shared calendars in Outlook for Mac.
Cannot resize pictures attached to messages
You need to resize pictures before adding to Outlook.
Outlook cannot open hyperlinks that don’t include a full URL
A hyperlink that is inserted into an e-mail message must be a full URL address that includes http://, otherwise the recipient cannot open the link.
E-mail messages disappear
Known issues in Office 2011