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If you are familiar with Microsoft Office Outlook 2007 or earlier versions of Microsoft Outlook, the following list describes features and functionality that have been discontinued or changed in Microsoft Outlook 2010.

  • Go menu    The Go menu is removed. To switch between views in Outlook, such as Mail, Calendar, and Contacts, use the Navigation Pane. Keyboard shortcuts for each view are still available. Point and pause the mouse pointer over the Navigation Pane view buttons to see the keyboard shortcut.

  • DAV connectivity for HTTP accounts     Outlook 2010 does not support the DAV protocol for connecting to HTTP-based e-mail accounts. To connect to your accounts in Outlook, install and use the Outlook Connector.

  • Microsoft Exchange 2000 Server support     Outlook 2010 can be used with Microsoft Exchange Server 2003, Exchange Server 2007, or Exchange 2010. Attempting to use Outlook 2010 with Exchange 2000 results in an error dialog box informing you that the server version is not supported. Contact your Exchange administrator for questions about your Exchange account.

    Note: Some features are available or offer greater functionality with more recent versions of Exchange.

  • Quick View     Support for the generic file viewer Quick View is discontinued. Quick View is not supported on any operating system that Outlook 2010 requires.

  • ScanOST     The ScanOST utility is discontinued. If you are experiencing problems with an offline Outlook Data File (.ost), we recommend that you re-create the file.

  • Offline Outlook Data File (.ost) old format      All offline Outlook Data Files (.ost) are created with the most recent file format that includes Unicode support and a larger file capacity. This new format was introduced in Microsoft Office Outlook 2003.

  • Legacy keyboard shortcuts    The ribbon is used in all parts of Outlook 2010. Legacy keyboard shortcuts, such as Alt-E for the Edit menu, are not available because the menus are replaced by the ribbon. Access to commands using the keyboard are available, but not using the same keyboard shortcuts that were used with the older toolbar and menu user interface. Keyboard shortcut keys that switch between mail views — Mail (CTRL+1), Calendar (CTRL+2), Contacts (CTRL+3) — can continue to be used.

  • Copy folder design    This feature is discontinued. As an alternative, use the Apply view to other folders command.

  • Most recently opened other user’s folder    When opening another Exchange user’s folders a list of previously opened folder does not appear.

  • View Web page URL    Web page URLs cannot be viewed in Outlook. The Web toolbar is not available, which includes the URL address bar, refresh, stop, start page, and Search the Web commands.

  • Exchange Client Extensions     Support for Exchange Client Extensions (ECE) is discontinued in Outlook 2010. ECEs are an extensibility feature introduced with the Microsoft Exchange mail client that existed prior to Outlook. ECEs will not load in Outlook 2010. ECEs in Outlook 2010, such as Delegate Access, Deleted Items Recovery, Exchange Extensions commands, and Exchange Extensions property pages have been converted to native Outlook code. To redesign third-party solutions, developers should rewrite any ECE as a COM add-in using native or managed code or as a Windows service application using native code and MAPI.


  • Conversation view     An improved conversation view is available for all mail folders. This new version of conversation view presents items in one view, including your sent items, regardless of which folder contains the item.

  • Organize pane    The Organize pane is removed. 

  • Remote Mail     The Remote Mail feature is discontinued. Cached Exchange Mode provides a better offline experience and does not require you to exit and restart Outlook when switching between connected and offline.

  • Exchange Message Security    This feature is discontinued. Use S/MIME for e-mail message security.

  • Legacy retention policies     Administrators can no longer deploy Group Policy to control retention policy. The retention policy portion of the AutoArchive dialog no longer appears.

  • Send link to public folder    TheSend Link to This Folder on the public folder context menu is removed.

  • Resize attached pictures     Attached photos can be resized to 1024x768 pixels. The previous options of 640x480 and 800x600 pixels are removed. For more information, see Reduce the size of pictures and attachments.

  • Sender Options    When using an Exchange account, Sender Options (accessed by right-clicking on a recipient’s name in the To line of a new e-mail message) provided the sender the ability to change the message encoding to that recipient. This feature was for sending messages to people using an e-mail application on an Apple computer. MIME encoding is now standard and understood by all mail applications.

  • Postmarking    This feature is discontinued. Outlook Postmarks are not generated by Outlook 2010. All Postmarking related policies are removed. In the Junk Mail Options dialog box, the When sending e-mail, Postmark the message to help e-mail clients distinguish regular e-mail from junk e-mail is removed.

  • Auto-Complete List    Auto-Complete List entries are no longer saved in an .nk2 file on your computer. The entries are now saved in your Exchange Server mailbox or for all other accounts in the Outlook Data File (.pst). For Exchange Server accounts, this enables the same list to appear on all computers where you use Outlook to connect to your Exchange account.

  • Clip Art task pane search    The Search in box is no longer available, which means that you can no longer limit your search to specific collections of content. To narrow your search, you can use multiple search terms in the Search for box.

  • Clip Art task pane Organize clips    Organize clips is no longer available. To open Microsoft Clip Organizer from Windows 7, Windows Vista, or Windows XP, click the Windows Start button, click All Programs, click Microsoft Office, click Microsoft Office 2010 Tools, and then click Microsoft Clip Organizer.

  • Clip Organizer    Clip Organizer is no longer accessible directly the Clip Art task pane in Microsoft Office programs. In addition, the following changes were made to Clip Organizer:

    • Automatic organization    The command for automatically finding media files on your computer and organizing them into collections no longer exists. However, you can still add clips manually to Clip Organizer or import them from a scanner or camera.

    • Sent to e-mail recipient as attachment    The command for sending a clip as an attachment in e-mail message is no longer available.

    • Delete from collection    Although you can delete clips from Clip Organizer, you can no longer delete a clip from a specific collection.

    • Find similar style    The command that allowed you to find clips of a similar style is no longer available.

    • List and Details views    The List and Details views are no longer available. Instead, all clips appear as thumbnails in the Clip Organizer window.


  • Calendar Publishing to     Calendars can be published from Outlook 2010 to for sharing with other people. The Web tools formerly used to manage and preview calendars published with the Outlook Calendar Publishing Service have been discontinued. However, you can continue to manage or delete calendars that you have published by using Microsoft Office Outlook 2007 or Outlook 2010. 

  • Save calendar as Web page    This feature is discontinued.

  • Group Schedule    The View Group Schedules and Plan a meeting commands that previously appeared under the calendar are removed. These commands are replaced by the new Group Schedule feature, integrated into Outlook Calendar.


  • Contact folder Activities tab    This feature is discontinued.

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