

NOTE: Cached Exchange Mode may not be available in your Outlook if the administrator has disabled this feature, Windows Terminal Services are installed on Windows Server, or if you are not using Exchange, Office365, or account in Outlook. Turn Off Cached Exchange Mode in Outlookīelow we have discussed steps to turn off Cached Exchange Mode in Outlook 2007, 2010, 2013, 2016, and 2019 versions. However, you can resolve the sync errors and other common Outlook issues, such as send/receive errors, by turning off the Cached Exchange Mode in Outlook. Users need to manually click the Send All button under the Send/Receive tab to send the email immediately. It may remain in the ‘ Outbox’ of your Outlook account for up to one minute until the next synchronization starts. There could also be delays in mailbox synchronization, or sync errors may occur that can prevent users from sending or receiving new emails and lead to send/receive errors in Outlook or cause conflicts in shared folder.Īn email message sent by an Outlook user is not sent immediately to the addressee. In addition, Outlook takes more time to fetch the information and may fail to locate emails in search. ost files is 50-80% larger than the mailbox size on the Exchange Server. However, an OST file becomes vulnerable to damage due to integrity issues caused by large size (oversizing).įun Fact: Local cache stored in. As a result, all items that you have access to are downloaded in the local cache (OST) that can significantly increase the OST file size. This allows Outlook users to add another user’s mailbox or shared folder to your profile. For instance, when the local cache or OST file grows larger, it consumes the local storage space and may lead to performance issues in Outlook.Ĭached Exchange Mode also works with Shared Folders in Microsoft Outlook 2010 and later versions.

There could be various reasons to turn off the Cached Exchange Mode. IMPORTANT NOTE: If you use Outlook for Mac, the default mode is set to Cached Exchange Mode and cannot be changed. However, you can enable or disable the Cached Exchange Mode based on your preference for Office 365 or Exchange and switch to Online Mode. Cached Exchange Mode is also the default and recommended mode when adding and setting up an Office 365 or Exchange Server account.
