Turn on Cached Exchange Mode

Use Cached Exchange Mode (Cached Exchange Mode: A copy of your Exchange Server account mailbox is saved on your computer in an offline Outlook Data File (.ost). This copy provides quick access to data, including when you work offline, and is synchronized with the mail server.) to work with items in your Microsoft Exchange Server mailbox even when your network connection is slow or unavailable.

  1. Click File > Account Settings > Account Settings.

Account Settings in the Backstage view

  1. Click the Exchange account, and then click Change.

Change command in the Account Settings dialog box

  1. Under Offline Settings, check Use Cached Exchange Mode.

Use Cached Exchange Mode check box in the Change Account dialog box

  1. Exit, and then restart Outlook.

If you want to turn off Cached Exchange Mode, repeat the steps, but uncheck Use Cached Exchange Mode.

By default, your whole mailbox is available offline, but you can control how much mail is kept offline.

Cached Exchange Mode and shared folders

Shared folders include Exchange Public Folders, SharePoint folders, or another person's Exchange folders when you’re using Delegate Access. By default, when Cached Exchange Mode is turned on, a local copy of shared folders is downloaded to your computer.

To change whether shared folders or Public Folders are downloaded when Cached Exchange Mode is turned on, do the following:

  1. Click File > Account Settings > Account Settings.

Account Settings in the Backstage view

  1. Click the Exchange account, and then click Change > More Settings.
  2. On the Advanced tab, under Cached Exchange Mode Settings, check the options you want.

Why isn’t the Cached Exchange Mode option available?

If the Cached Exchange Mode option is missing, one or more of the following might apply:

 
 
Applies to:
Outlook 2013