Last updated on October 30th, 2023 at 07:38 am
Many Outlook errors are associated with OST files. According to many queries submitted on Microsoft forums, It is mainly happening in the latest version of Outlook (2019). Today, we will discuss in this blog a situation where a user cannot start or run Microsoft Outlook 2019 due to a “missing .ost file” error.
The Exchange account uses an offline Outlook Data File (OST) file to store a synchronized copy of your Exchange mailbox information on your local computer. The tool allows you to use all the data you have already downloaded, such as email, calendar data, contacts, and tasks, etc., whether you are connected to the server or not. You only need to connect to the server to send an email and download a new email. However, your email messages will not be sent, and new messages will not be downloaded until your Internet connection is established.
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