check before: 2026-05-04
Product:
Exchange, Outlook, Purview, Purview Communication Compliance
Platform:
Online, Web, World tenant
Status:
In development
Change type:
Admin impact, New feature, Updated message, User impact
Links:
Details:
Summary:
Azure PST Import enables Microsoft 365 admins to import PST files from Azure Blob Storage into Exchange Online mailboxes using PowerShell. The process includes readiness analysis, import execution, and cleanup, with no GUI available. It starts globally on August 31, 2026, requiring specific Azure permissions and mailbox prerequisites. Imported data follows existing retention and compliance policies.
Details:
Updated May 5, 2026: We have updated the timeline. Thank you for your patience.
[Introduction]
Azure PST Import provides a structured, PowerShell-based way for administrators to import PST files stored in Azure Blob Storage into Exchange Online mailboxes, which are commonly used to store archived Outlook mailbox content. This capability helps organizations migrate historical email data in a controlled and auditable way by validating readiness before importing and by providing reports throughout the process. The process starts by creating an Azure PST Import endpoint to establish the connection between Azure storage and Exchange Online. Administrators then run a migration batch in Analyze mode to review readiness and validate the input before proceeding. Once the analysis results are reviewed, they use those results to create and start the import batch, which begins importing the PST files into the specified mailboxes.
This message is associated with Microsoft 365 Roadmap ID 557559.
[When this will happen]
Global rollout
Start: August 31, 2026 (previously May 4)
Complete: September 1, 2026 (previously May 15)
Change Category:
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Scope:
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Release Phase:
General Availability
Created:
2026-04-16
updated:
2026-05-06
Task Type
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Docu to Check
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MS How does it affect me
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linked item details
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summary for non-techies**
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Direct effects for Operations**
PowerShell Dependency
The Azure PST Import process requires administrators to use PowerShell cmdlets exclusively, which may lead to operational delays if administrators are not proficient in PowerShell or if they encounter issues during execution.
- roles: Microsoft 365 Administrators, IT Support Staff
- references: https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=557559
Data Compliance Risks
If the import process is executed without proper validation of mailbox prerequisites and retention policies, it may lead to compliance violations, as imported data will be subject to existing retention and compliance policies.
- roles: Compliance Officers, Microsoft 365 Administrators
- references: https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=557559
User Experience Disruption
Although the import process is admin-driven, if not properly managed, it could lead to temporary unavailability of mailbox data for users, affecting their access to historical emails during the import period.
- roles: End Users, Microsoft 365 Administrators
- references: https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=557559
Configutation Options**
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Opportunities**
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Potentional Risks**
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Data Protection**
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IT Security**
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Hypothetical Work Council Statement**
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DPIA Draft**
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explanation for non-techies**
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change history
| Date | Property | old | new |
| 2026-05-06 | MC MessageTagNames | New feature, User impact, Admin impact | Updated message, New feature, User impact, Admin impact |
| 2026-05-06 | MC Summary | Azure PST Import enables Microsoft 365 admins to import PST files from Azure Blob Storage into Exchange Online mailboxes using PowerShell. The process includes endpoint creation, readiness analysis, import execution, and cleanup. It ensures compliance with existing retention policies and audit logging, with no direct user impact. | Azure PST Import enables Microsoft 365 admins to import PST files from Azure Blob Storage into Exchange Online mailboxes using PowerShell. The process includes readiness analysis, import execution, and cleanup, with no GUI available. It starts globally on August 31, 2026, requiring specific Azure permissions and mailbox prerequisites. Imported data follows existing retention and compliance policies. |
| 2026-05-06 | MC Last Updated | 04/16/2026 01:30:09 | 2026-05-05T22:32:06Z |
| 2026-05-06 | MC Messages | [Introduction]
Azure PST Import provides a structured, PowerShell-based way for administrators to import PST files stored in Azure Blob Storage into Exchange Online mailboxes, which are commonly used to store archived Outlook mailbox content. This capability helps organizations migrate historical email data in a controlled and auditable way by validating readiness before importing and by providing reports throughout the process. The process starts by creating an Azure PST Import endpoint to establish the connection between Azure storage and Exchange Online. Administrators then run a migration batch in Analyze mode to review readiness and validate the input before proceeding. Once the analysis results are reviewed, they use those results to create and start the import batch, which begins importing the PST files into the specified mailboxes. This message is associated with Microsoft 365 Roadmap ID 557559. [When this will happen] Global rollout Start: May 4, 2026 Complete: May 15, 2026 | Updated May 5, 2026: We have updated the timeline. Thank you for your patience.
[Introduction] Azure PST Import provides a structured, PowerShell-based way for administrators to import PST files stored in Azure Blob Storage into Exchange Online mailboxes, which are commonly used to store archived Outlook mailbox content. This capability helps organizations migrate historical email data in a controlled and auditable way by validating readiness before importing and by providing reports throughout the process. The process starts by creating an Azure PST Import endpoint to establish the connection between Azure storage and Exchange Online. Administrators then run a migration batch in Analyze mode to review readiness and validate the input before proceeding. Once the analysis results are reviewed, they use those results to create and start the import batch, which begins importing the PST files into the specified mailboxes. This message is associated with Microsoft 365 Roadmap ID 557559. [When this will happen] Global rollout Start: August 31, 2026 (previously May 4) Complete: September 1, 2026 (previously May 15) |
| 2026-05-06 | MC Title | Microsoft Purview: Data Lifecycle Management- Azure PST Import | (Updated) Microsoft Purview: Data Lifecycle Management- Azure PST Import |
| 2026-05-06 | MC End Time | 06/15/2026 09:00:00 | 2026-10-05T09:00:00Z |
Last updated 1 week ago ago
