check before: 2026-04-01
Product:
Exchange, Purview
Platform:
Online, Web, World tenant
Status:
In development
Change type:
Links:
Details:
Azure PST Import is a migration method that enables PST files stored in Azure Blob Storage to be imported directly into Exchange Online mailboxes. It follows the standard two‑step Exchange Migration Service pattern: an initial analysis phase to validate and assess PST data, followed by execution of the actual migration. The process also involves creating a migration endpoint, running an analysis-only migration batch, using the analysis results to configure the final batch, and then starting the batch to import PST content into target mailboxes.
Change Category:
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Scope:
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Release Phase:
General Availability
Created:
2026-02-20
updated:
2026-02-20
Docu to Check
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MS workload name
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summary for non-techies**
Azure PST Import is a service that efficiently and securely transfers email data from PST files stored in Azure Blob Storage to Exchange Online mailboxes, involving an analysis phase to validate data and a migration phase to import the content into target mailboxes.
Direct effects for Operations**
Data Loss Risk
If the Azure PST Import is executed without proper preparation, there is a risk of data loss during the migration process, especially if the analysis phase is skipped or not thoroughly conducted.
- roles: IT Administrator, Data Analyst
- references: https://techcommunity.microsoft.com/t5/security-compliance-identity/understanding-the-pst-import-process-in-exchange-online/ba-p/3651230, https://learn.microsoft.com/en-us/exchange/mailbox-migration/import-pst-files-to-exchange-online
User Downtime
Inadequate preparation for the migration can lead to significant downtime for users as mailboxes may become inaccessible during the import process, impacting productivity.
- roles: End User, IT Support
- references: https://www.microsoft.com/en-us/microsoft-365/blog/2021/06/15/understanding-the-impact-of-migration-on-users/, https://www.cio.com/article/243198/how-to-minimize-user-disruption-during-it-migrations.html
Configutation Options**
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explanation for non-techies**
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