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Microsoft 365 import data from PST files


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Hi, @Lu.taiand @orlando!

You can do the import without any third-party solutions with the Microsoft native tools alone. Most likely, you will find all the PST files here C:\Users\user-name\Documents\Outlook Files (depending on the OS and Outlook versions). 

The general procedure of the import goes as follows:

1. Start by setting permissions. Your Microsoft 365 account needs proper permissions for the PST files import. For this, the user account has to have the Mailbox Import Export role assigned. You can check and update the permissions in the Exchange admin center.

2. Then goes the import. The first stage of it would be uploading files to the Azure cloud storage. 

3. Verification. Before migrating PST files to Microsoft 365, check if they were successfully uploaded to Azure storage.

4. After you're done with verification, create the PST mapping file. It will specify to which Microsoft 365 accounts PST files have to be imported. Note: The mapping files will be saved in a CSV format. 

5. The final stage is creating an import job Of the PST files.

The procedure requires some time and knowledge, but you can quickly go through it by yourself with this detailed guide https://www.nakivo.com/blog/migrating-pst-files-to-office-365/

You will find all of the needed screenshots that significantly facilitate the import.   

Let me know if you have any questions. 

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