How to Import OST File in Outlook 365?

import ost file into outlook 365

Now, these days many companies migrating their data to cloud-based applications such as Office 365. Storing your Exchange server mailbox such as emails, contacts etc. data items on the cloud platform such as Office 365 has lots of benefits. Because applications based on the cloud offer more services as compared to the desktop based email clients. These cloud-based services are fast, secure and flexible. Data saved on the Office 365 application is easily and universally accessible in the presence of internet connectivity.

Many users want to know how to import OST file in Outlook 365 application. If you are also searching a solution for the same problem then surely this blog will help you to upload OST to Office 365 with the help of two methods. So read both the methods and select a suitable one to perform the migration process.

Users Query : "Hello to all! due to advanced features provided by cloud-based application Office 365. I want to move multiple OST file data to Exchange online. Can anyone suggest me a safe and reliable solution to import OST file into office 365? Thanks!”

Can You Upload OST to Office 365 directly?

No, there is no direct manual method available to migrate OST file data to Office 365 application. But the user can perform the migration process indirectly, for this the user first has to export the OST file data items to Outlook PST file format, after this the user has to import the PST file to Outlook 365 (Exchange online) application.

Know How to Import OST File in Outlook 365 By Using Manual Workaround

Please follow the mentioned steps to perform this task.

Step 1: Convert the OST file data to PST file format.

  1. First open Outlook Application.
  2. Click File and then choose Import and Export.
  3. Now choose export to a File and click on Next.
  4. Choose the personal folder file (.pst) and click on Next.
  5. After that choose email and folders and also check to include subfolders option.
  6. Click Next and, browse the destination location where you want to save the OST file.

Important Note: The above discussed method will not work if the user is not connected to the Exchange server.

The user can also read OST & Exchange Server Synchronisation Issues

Step 2: Now upload the PST data file to Office 365 Application.

The user can perform this process with the help of two methods:

  1. Network Upload Method using Azure Azcopy
  2. Drive shipping method

#Method 1: Network Upload Method

  1. First, download and install Azure Azcopy and then the user has to copy the SAS URL.
  2. Now upload the PST file into Office 365.
  3. After that create the PST mapping (CSV) file.
  4. Create the import job in O365 to import PST file.
  5. After the user has to filter the data and start the PST import job.

# Method 2: Drive Shipping Method

This method helps the user to import the PST file to Office 365 Application. For this, the user the user has to copy the PST file to the hard disk drive and send the hard disk drive to the Microsoft. After that Microsoft will copy the entire PST file data items from the disk drive to the cloud.

Shortcomings of Manual Approach to Import OST file Into Office 365

  • This method is a very lengthy and consumes lots of users time.
  • There is a huge risk of data loss is there in this migration process.
  • Requires strong technical hands to perform this task.
  • Sometimes the user has to face OST file deletion or corruption problem.

Expert Advice to Know How to Import OST File in Outlook 365

As we have seen that the manual solution has lots of drawbacks. So to overcome the limitations the user can take the help of a safe and reliable solution to migrate OST file to office 365 application. By using this utility the user can easily import OST file emails, contacts, a calendar to Office 365. This utility has a self-explanatory user interface so that everyone can easily use this software with ease. For complete and detailed info the user can try the demo version of this software.

Summing Up

To upload OST to Office 365 data is a challenging task. So in this article, we have resolved the problem faced by the users how to import OST file in Outlook 365 application by using the manual as well as automated methods. The manual process to perform this migration process has lots of major drawbacks, so in that case the user case the user can take the help of automated solution.