check before: 2025-11-01
Product:
Exchange, Purview, Purview Communication Compliance, Purview compliance portal
Platform:
Online, Web, World tenant
Status:
Launched
Change type:
New feature, Admin impact
Links:
Details:
Summary:
Auto Archiving for Exchange Online automatically moves oldest mailbox items to archive when usage exceeds 96%, preventing mail flow disruption. Enabled by default, it applies to mailboxes with archives, respects "Never Move to Archive" tags, and allows admin adjustments or disabling. Rollout starts January 2026.
Details:
[Introduction]
We're introducing Auto Archiving for Exchange Online to help prevent mail flow disruptions caused by mailboxes reaching their storage quota. This update ensures real-time mailbox health monitoring by automatically moving the oldest items to the archive when mailbox usage exceeds 96% of its quota. This feature addresses customer feedback for proactive mailbox space management and helps maintain business continuity.
[When this will happen:]
Public Preview: Rollout began in mid-November 2025 and is expected to complete early December 2025
Worldwide rollout: Rollout begins in early January 2026 and is expected to complete late January 2026
Change Category:
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Scope:
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Release Phase:
General Availability, Preview
Created:
2025-12-04
updated:
2025-12-04
Public Preview Start Date
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Task Type
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Docu to Check
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MS How does it affect me
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MS Preperations
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MS Urgency
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MS workload name
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linked item details
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summary for non-techies**
Microsoft is introducing Auto Archiving for Exchange Online, which automatically transfers the oldest emails to an archive when a mailbox reaches 96% capacity, with rollout beginning in January 2026.
Direct effects for Operations**
Mailbox Disruption
If auto-archiving is enabled without preparation, users may experience unexpected loss of access to older emails, impacting their workflow and productivity.
- roles: End Users, IT Support Staff
- references: https://learn.microsoft.com/exchange/security-and-compliance/messaging-records-management/auto-archiving
User Confusion
Users may be confused about where their emails have gone if they are automatically archived, leading to increased support requests and frustration.
- roles: End Users, Helpdesk Staff
- references: https://learn.microsoft.com/exchange/security-and-compliance/messaging-records-management/auto-archiving
Compliance Risks
Without proper communication and training, users may inadvertently archive important emails that should be retained, leading to compliance issues.
- roles: Compliance Officers, IT Administrators
- references: https://learn.microsoft.com/exchange/security-and-compliance/messaging-records-management/auto-archiving
Increased Support Load
Helpdesk staff may face a surge in support tickets related to auto-archiving issues, straining resources and response times.
- roles: Helpdesk Staff, IT Support Staff
- references: https://learn.microsoft.com/exchange/security-and-compliance/messaging-records-management/auto-archiving
Configuration Errors
If admins do not prepare for the change, they may misconfigure the auto-archiving settings, leading to unintended consequences for mailbox management.
- roles: IT Administrators, System Administrators
- references: https://learn.microsoft.com/exchange/security-and-compliance/messaging-records-management/auto-archiving
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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** AI generated content. This information must be reviewed before use.
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Last updated 3 weeks ago ago
