EX1260260: Exchange Online Service Health Incident (Service Degradation)

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365 Service Alert

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Apr 6, 2026, 10:50:59 AMApr 6
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Users are unable to access archived email messages in Outlook on the web.                                                                                                                                                                                                                                   
Microsoft

Users are unable to access archived email messages in Outlook on the web

ID: EX1260260

Issue type: Incident

Status

Service Degradation

Impacted services

Exchange Online

Details

Title: Users are unable to access archived email messages in Outlook on the web

User impact: Users are unable to access archived email messages in Outlook on the web.

More info: When users try to access archived email messages in Outlook on the web, they may see the error message “Your message cannot be displayed right now.”

Current status: The fix deployment has completed and has fully saturated throughout the affected environment. We're checking with your organization now to confirm whether impact has been fully resolved.

Scope of impact: Your organization is affected by this event, and some users attempting to access archived email messages in Outlook on the web are impacted. This section may be updated as our investigation continues.

Root cause: A code issue is resulting in restricted access when archiving email messages in Outlook on the web. The primary and archive mailboxes are on different machines, the request to access the mailbox is landing in the correct portion of infrastructure but is trying to find the primary instead of the archive mailbox, resulting in impact.

Next update by: Monday, April 6, 2026, at 3:00 PM UTC

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