What is cached exchange mode

Cached Exchange Mode is one of the two modes to connect the Outlook application with an Exchange Server. The other one is Online Mode. While the Cached mode is enabled in Outlook, the Outlook client will check the OST file for all the information and constantly update the mail and synchronize it to open the cached file.

Cached mode is beneficial when you want to work offline. But while working in the cached mode, multiple issues can occur with Outlook. A user cannot open an inaccessible or corrupt OST file. In such cases, you need to assistance of professional software.

It can recover the data, provide the preview, filter the recovered data, and save it in multiple formats, including the PST file. Note: Downloading headers only is a feature available when you connect to Exchange or Exchange On the E-mail tab, click the Exchange Server account, and then click Change. You do not have an Exchange email account in your Microsoft Outlook profile This feature requires that your Outlook profile contain an Exchange account. Your Exchange administrator may have disabled this functionality Exchange administrators have the ability to disable this feature in Outlook.

Additional information for administrators is available in the Microsoft Office Resource Kit. However, installing the Terminal Services Client or the Remote Desktop Connection client does not prevent access to this feature. When you are using Cached Exchange Mode, a message may remain in the Outbox for up to one minute until the next synchronization with the server running Exchange occurs. To turn on or off shared folder support when using Cached Exchange Mode, after step 2 in the above procedure, click More Settings , and then on the Advanced tab, select or clear the Download shared folders excludes mail folders check box.

Top of page. On the Tools menu, click Account Settings. If you are unable to turn on Cached Exchange Mode, one or more of the following might apply: You do not have an Exchange email account in your Microsoft Outlook profile This feature requires that your Outlook profile contain an Exchange account. Exit and restart Office Outlook Need more help? Expand your skills.

Get new features first. Was this information helpful? Yes No. Thank you! Any more feedback? The more you tell us the more we can help. Can you help us improve? Resolved my issue. Clear instructions. Easy to follow. No jargon. Pictures helped. Didn't match my screen. Incorrect instructions. Too technical. Not enough information.

Not enough pictures. Any additional feedback? Submit feedback. Thank you for your feedback! Outlook is configured to determine a user's connection speed by checking the network adapter speed on the user's computer supplied by the operating system.

If the reported network adapter speed is KB or lower, the connection is defined as a slow connection. When a slow connection to an Exchange Server computer is detected, Outlook helps users have a better experience if they reduce the less important information that is synchronized with the Exchange Server computer.

Outlook makes the following changes to synchronization behavior for slow connections:. Outlook continues to synchronize the Outlook data with mobile devices, and some client-side rules might run.

We recommend that you do not synchronize mobile devices when the Cached Exchange Download only headers setting is enabled. When you synchronize a mobile device by using ActiveSync, for example, full items are downloaded in Outlook, and the synchronization process is less efficient than it is during regular Outlook synchronization to users' computers. The Download only headers setting for synchronization is designed for Outlook users who have dial-up connections or cellular wireless connections, to minimize network traffic when there is a slow or expensive connection.

For a scenario where users' actual data throughput is slow, even though their network adapters report a fast connection, you can disable automatic switching to downloading only headers by using the Group Policy option, Disallow On Slow Connections Only Download Headers. Similarly, there might be connections that Outlook has determined are slow but which provide high data throughput to users. In this case, you can also disable automatic switching to downloading only headers.

When an Outlook account is configured to use Cached Exchange Mode, there's always a local copy of a user's Exchange mailbox ready in an offline data file. By default, the. When the user is online, the cached mailbox and OAB are periodically updated from Exchange Server in the background. Any email messages the user drafted while offline are automatically sent when that user is back online.

If a user upgrades from an earlier version of Outlook to Outlook and you previously configured Outlook for Cached Exchange Mode, those old Cached Exchange Mode settings are automatically applied, including a new synchronization control for shared mailboxes. The default location for new. As an administrator, you can configure a different. If you do not specify a different. The Mail to keep offline slider in the Server Settings dialog box in Outlook has been updated to apply to shared folders and lets you set a smaller synchronization window, available by default with Cached Exchange Mode in Outlook The slider allows an Outlook user to limit the email messages that are locally synchronized in a Microsoft Outlook data file.

By default, if Cached Exchange Mode is enabled, Outlook caches email messages only from the last 12 months and removes anything older from the local cache for the PC. These default settings depend on the device, with mobile devices having smaller default settings.

The email messages that are removed from the local cache are still available for users to view, but they'll need to be connected to Exchange Server to view them. Users can view messages that were removed from the local cache by scrolling to the end of a message list in a folder and clicking the message Click here to view more on Microsoft Exchange.

Users can also change how much email to keep offline. You, the administrator, can change the default age or enforce the age of email messages that are removed from the local cache.

Remember that customizing Cached Exchange Mode settings is optional. In the Account Name column, click the account you want to configure, and click Modify to display the Exchange Settings dialog box. By default, Cached Exchange Mode is disabled. Right-click the policy object that you want, and click Edit.

The Group Policy Management Editor window opens. In the Default location for OST files text box, enter the default location for.