Enable Exchange Cached Mode for Microsoft Outlook

Why Exchange Cached Mode Cannot Be Enabled

If you are unable to turn on Cached Exchange Mode, one or more of the following may apply:

• An Exchange account doesn't exist in your Microsoft Outlook profile. This feature requires that your Outlook profile contain an Exchange account.
• Your Exchange server administrator has disabled this functionality. Exchange administrators can disable this feature in Outlook. For more information, contact your Exchange administrator.
• Microsoft Terminal Services is installed. Cached Exchange Mode is not available on computers that run Windows Server when Microsoft Terminal Services is installed.

How to Verify If Exchange Cached Mode Is Active

Check the bottom right corner of your Outlook window:

• If it says Connected to Microsoft Exchange — Outlook is running in Exchange Cache Mode and a data file (.OST) exists on your computer at: %LOCALAppData%\Microsoft\Outlook\
• If it says Online with Microsoft Exchange — Outlook is connected directly to Exchange and no local data file is saved. Outlook must remain connected to Exchange at all times to access user data. Connection speed may be slower and sync may time out if the data file is too large and Outlook is not running in Cached Mode.

Steps to Enable Exchange Cached Mode

Follow the steps in the Microsoft help article to Turn on Exchange Cache Mode settings.
Note for Salesforce Outlook Integration users: If you are using the Salesforce Outlook Integration, make sure to exit the app from the System tray to stop the sync process until the Outlook data file is completely downloaded to your machine. You will see "All Folders are up to date" at the bottom center of the Outlook screen once the download is complete.

 Microsoft Exchange Server