Import PST to Microsoft 365 for Free - Network Upload Method

Microsoft Network upload method - A free way to import PST file to Office 365 account with all mail, contact, calendar, task etc. On other word, this method helps organizations to move their Outlook data to Office 365 cloud environment. This is most popular and effective to migrate your data in Microsoft 365.

Network Upload Method vs Third-party tool

This comparison may look admirable for a third-party solution — and it is. We know that Microsoft is a broad company that offers many advanced technologies to manage user mailboxes and data. Because Microsoft’s ecosystem is deeply integrated with programming, some features can be a bit technical to control.

However, when we use a professional solution like a PST to Office 365 Migrator, the process becomes much easier. There is no need to perform manual steps repeatedly, no PowerShell commands to deal with, and no issues related to file size limitations.

How to transfer PST to Office 365 using Network upload Method?

In this video, I provide a detailed, step-by-step tutorial on how to import PST files into Office 365 using the Network Upload method through the Microsoft 365 Compliance Center. This method is especially useful for IT administrators and organizations needing to migrate large volumes of mailbox data to Exchange Online efficiently and securely.

The process includes preparing your PST files, using the AzCopy tool to upload them to Azure Storage, generating a SAS URL, and creating a CSV mapping file to link PST files with user mailboxes. I also cover how to use the Import wizard in the Compliance Center to complete the migration.

This video is aimed at IT professionals, system administrators, or anyone managing Microsoft 365 environments. Whether you’re planning a company-wide migration or just looking to move a few archived mailboxes to the cloud, this method is reliable and scalable.

If you encounter any issues during the process—upload errors, mapping problems, or mailbox access issues—feel free to drop your questions in the comments. I'm happy to help troubleshoot or provide clarifications.

How to import PST file to Office 365 using Professional application?

If you don't want to follow manual upload method for PST to Office 365 then you can try MailsDaddy PST to Office 365 migration tool. This single GUI application is efficient and reliable to open data into Office 365 platform in a few simple click. You can also use the free demo edition before purchasing a full edition to transfer data into Office 365. Also the application provides bulk migration features that allows user to upload CSV file for multiple user account PSTs.

Steps to Import Bulk PST in Multiple Account

• Step 1: Run MailsDaddy PST to Office 365 Migration Tool and Click on Bulk Migration tab.
• Step 2: Click on sample CSV and Modify the list with your local PST file location and user account address then save it.
• Step 3: Upload the CSV file then select All accounts that you want to migrate.
• Step 4: Choose mailbox: Primary, In-place Archive or Group mailbox.
• Step 5: Enable or Disable Incremental Migration, if it is required.
• Step 6: Save the loction then hit on Next.
• Step 7: Choose Automate or Manual to authenticate your Microsoft 365 account. With the manual way, you have to manually create Office 365 Tenant id, Client id & Client Secret Value.
• Step 8: After authentication, click on Continue button.
• Step 9: Cilck on Ok button then hit on Start button.
• Step 10: When the migration is finished, check your Office 365 accounts.

More Resouces

Free PST to Office 365 Upload Method