Outlook works with the OST file format, which is an offline folder file that lets you see emails even when you aren't connected to the internet. This blog will be useful if you need to transfer OST files to a new machine. The importance of an OST file cannot be overstated. There are a few ways available if you need to move an OST file to a different machine. Let's take a closer look at them. You may simply download the mailbox data from the Exchange Server and configure your account in Outlook on the new computer if you own the Exchange profile. You can convert an OST file to PST and then move it to a different system if you want to transfer the data to another user. The PST file may be imported into the mailbox of the new user. The approach, show how you convert OST to PST before moving PST to a new machine, will be tested here. As a result, you should start by converting OST to PST. Let's get the festivities started: You must convert OST to PST in this stage. Though you may export OST mailbox data to PST using Outlook's Export function, we'll use OST Converter in this case.