You cannot enable Cached Exchange Mode on POP or IMAP accounts. Note: To enable Cached Exchange Mode you need to have an Exchange Server provided with Microsoft Exchange Account. Some of the emails may be stored in the OST file only and may reflect in the Exchange mailbox.If you have multiple users working on a computer, any unauthorized user can access the local copy of mail data saved on that computer.It is quite difficult to share calendar entries in cached mode since calendar items will point to the local files rather than on the Server files.When you enable Cached Mode in an account that has a large amount of data, you may face downloading issues.The changes made by you on the local copy are not directly reflected on the exchange server until youвЂ™re connected to the internet.Issues that may occur while using Outlook in Cached Exchange Mode:ДЄlthough Cached Exchange Mode is beneficial, there are certain drawbacks that are to be considered before enabling it: You can seamlessly work on Outlook even when you don't have a reliable internet connection.You can make changes to the mailbox even when you work offline.

It works well with high latency connections.Benefits of using Cached Exchange Mode in Outlook: This local copy of mail data is saved on the computer, which provides quick access to your data even when youвЂ™re not connected to the server and also helps you work efficiently during a low internet connection. While Online Mode connects to an Exchange server instantly, Cached Exchange Mode creates a copy(Cache) of your mailbox data in the form of a local copy. Cached Exchange Mode is one of the two modes that is used to connect Outlook with an Exchange account, the other one being the Online Mode.

Use cached exchange mode outlook