How to Resolve the Outlook Data File Cannot Opened in Office 365?

Are you having trouble opening the Outlook Data files in Office 365? Then you don’t need to worry anymore? Many users have this query, and you are on the right page. In this blog, you will learn why your Outlook Data File cannot opened in Office 365 and its possible solution.

There are primarily two types of Outlook Data files: PST & OST. 

PST, also known as Personal Storage Table that stores mailbox data like emails, contacts, calendars, tasks, notes, etc. These files are mainly used for backup, archiving and transferring data from one computer to another. These files are created when you configure IMAP/POP web accounts in Outlook. 

OST, also known as Offline Storage Table that also stores mailbox data like emails, contacts, calendars, tasks, notes, etc. These files store a synchronised copy of data with the Exchange server and are updated when Outlook connects with the internet. These files can be accessed offline and are created when you add accounts like Office 365 or an IMAP account to Outlook.

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Why does the Outlook Data File not open in Office 365?

The error “Outlook Data File Cannot Open in Office 365” arises when Outlook cannot open or access Outlook data files. The issues open when you import an Outlook Data file to Office 365. Some common reasons that will cause these kinds of errors are:

Corrupted/Damaged Outlook Data files: Sometimes Outlook data files can be corrupted due to improper shutdown, system crashes and virus attacks.

Improper Profile configuration: If there is an issue in Outlook profile settings, it may prevent the Outlook profile from opening in Office 365.

Old Office 365 installation: If you try to import Outlook data files to an outdated Office 365 installation, then this kind of error occurs.

Add-ins: Other third-party add-ins interfere with Outlook in opening data files and prevent them from opening data files in Office 365.

Automated method to open Outlook Data files in Office 365

A professional tool like eSoftTools OST to Office 365 migrator can solve the error “Outlook Data File Cannot Open in Office 365” with a few clicks. It can recover corrupted/damaged Outlook data files and migrate them to Office 365/ Microsoft 365. The software can easily migrate Outlook Data files like OST/PST/NST to Office 365 without any data loss. This tool can upload any type of Outlook Data file of any size without any restrictions.

Benefits and features of the OST to Office 365 migrator

• Migrate single and multiple OST/PST/NST files to Office 365 at a single time.
• Preview all OST files & folders in the preview panel before conversion.
• Easily migrate selected OST files & folders to Office 365.
• Migrate Outlook data files to other cloud applications like Gmail and IMAP accounts.
• The email filter feature filters emails according to Date.
• Preserves the Outlook Data files folder hierarchy and data structuring during migration.
• Without the installation of Outlook on your Windows system, this software migrates OST files to Office 365.

How to open Outlook Data files in Office 365? 

Download, install and launch the eSoftTools OST to Office 365 migrator tool on your Windows system.

Click on the Select OST button, and a new conversion window will open.

Select the OST file adding mode: Single OST file conversion or Bulk OST file conversion.

Click the Next button, and a preview of all OST files & folders will be displayed in the preview panel.

Select the necessary OST files & folders that are to be migrated and click the OST to Office 365 Migrate button on the menu bar.

Enter Office 365 login details like email address and other options- Import Options and Mail filter, etc.

Click the Convert button, and all selected OST files & folders will be migrated to Office 365.

Conclusion

In this article, you have learnt the professional method to solve the issue “Outlook Data File Cannot Open in Office 365”. This error can be frustrating, but if you follow the steps of this software, your issue will be resolved with a few clicks. Before purchasing the software, if you want to try the software, then download its demo version.