I fully understand what is cached mode in Outlook, and how it's adjusted. If your OST file is oversized or damaged, then you can convert it to PST and split it into small and independent chunks of PST.Feel my explanation was a bit unclear ) The OST to PST Converter software performs complete OST recovery without impacting the originality or the hierarchy of the mailbox data.

Kernel for OST to PST Converter is an amazing tool for converting even damaged OST files to PST. If you are facing any of the above mention issues regarding Exchange, then you should use a third-party tool for converting OST files to PST. In all these situations, Exchange administrators convert the OST files on the user systems to PST files to retrieve the user mailboxes.

The Exchange Server is under maintenance.

Also, some other situations in which they become useful are: Exchange administrators can use them to restore deleted or missing user mailboxes. How can OST files be useful in restoring Exchange user mailboxes?Īpart from its use for offline working, the offline Outlook Data (OST) files are helpful in many ways.

Once you are done, then click the Finish button.

In this wizard, you have the option to check or uncheck Cached Exchange Mode and choose the time (months) on the slider as per your requirement.

Select the already configured account and then choose Change.

Open MS Outlook and click File > Account Settings > Account Settings.

The procedure of turning on Cached Exchange Mode is quite easy you need to follow below mentioned steps (here I am using MS Outlook): How to enable Cached Exchange Mode in MS Outlook?

And while enabling Cached Exchange mode, there is an option to select the synchronization time in months.

When you enable Cached Exchange Mode, Outlook downloads a copy of mailbox items to the local system. While configuring your MS Outlook with Exchange or Office 365 account, you have the option to enable Cached Exchange mode. An OST file has the benefit that you can access these emails without internet connectivity as a local copy of mailbox is there. OST files are the Offline Outlook data files that store a copy of Outlook emails on the local machine.

What is cached exchange mode outlook