Office 365 is a popular cloud service application created by Microsoft. With it, the user can immediately get access to applications like- MS Word, Excel, PowerPoint, and Outlook through web browsers. Due to this many desktop-based application users are migrating to this cloud service called Microsoft 365. To migrate with data of Outlook users requires importing OST files to Office 365 account. Here, in this article, we will discuss step by step process, of “how to import OST file to Outlook Office 365?”.
Also Read:- How to Import Outlook PST to Office 365 Account?
Reasons to migrate OST files to Office 365
There are multiple reasons behind it:-
- When an organization is shifting its database to Office 365, due to its advanced features.
- To avoid an unnecessary crash in desktop applications and their data files.
- To get easy access to their important data from anywhere and anytime
For these and some other reasons, users need to import their old ost files in outlook 365.
Best Solution to Directly Import Old OST files to Outlook 365
Importing the OST files to Office 365 is not an easy process. And if a user is doing this process using any manual method they might face problems. As said, beginners and non-technical users can’t do it. That is how? have to use an automated tool like- PassFixer OST Converter Software. It will help users in importing OST files in Outlook/Office 365 accounts in a direct manner with a quick process.
How to Import Old OST files in Outlook 365?
- Download, Install and open OST Converter Tool on your computer.

- Now add an OST file in the software for the import process. (Users can add single or multiple OST files in the software).

- After adding OST files hit on Next to start the scanning process to repair corrupt OST and Extract OST folder & items.

- Get a live preview of all components from OST and select the required folder/sub-folders.

- Next, choose the Import to Cloud button and select Import OST to Office 365.

- Fill up the login credentials of your Office 365 account and click on “Convert”

- Now easily start OST to Office 365 migration and import all your OST file items to your Office 365 account.

Advanced features of OST to Office 365 Converter
- Export OST mailbox items to Office 365 in simple clicks.
- Shows a live preview of all OST mailbox items to transfer them selectively
- Allows transferring emails, contacts, calendars, tasks, notes, appointments, and other OST items to Office 365 directly.
- Able to Import corrupt, inaccessible, or inaccessible OST files to Office 365 Cloud.
- Supports OST files all Outlook versions including- 2019, 2016, 2013, 2010, 2003, and below versions.
Wrap Up
The manual methods are complex; from the professional tool is an easier and simpler answer to Import old OST files to Outlook 365 accounts. Users should try the Passfixer OST to Office 365 Importer and follow the above-mentioned steps to perform quick OST to Office 365 migration step by step.
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