Microsoft 365 Alert – Service Degradation – Exchange Online – Users may be unable to view the body of edited Exchange Online email messages from the Sent folder – RESOLVED

Announcements Shagufta Naaz

01/06/2026 08:44:00 AM

NHSmail Reference: INC46839190

Microsoft Reference: EX1318421

Issue Status: RESOLVED

Issue Description: Users may be unable to view the body of edited Exchange Online email messages from the Sent folder.

More info: When a user opens and edits an email message in the draft folder, sends it, and then views it from their sent folder, the edited portion may appear blank in the message preview.

Impact only occurs for users utilizing the “Show email as individual messages” Message organization setting. While we work on mitigating this issue, users can utilize the “Show email grouped by conversation” message organization setting to avoid this issue.

Final Update: 11/08/2026 02:10:00 PM –Microsoft has completed the deployment of their fix and confirmed through testing with a subset of affected users that the impact has been remediated.

Scope of impact: Users attempting to view the body of edited Exchange Online email messages from the Sent folder may have been impacted.

Root cause: A code issue occurred when an email message was saved to drafts and it created a local copy. When a user edited the email message in drafts, sent it, and then viewed the email message from their sent folder, it attempted to reference the stale local copy instead of the edited version. As a result, the attempt to fetch the body failed and caused impact.

Next steps: Microsoft is reviewing the offending code issue to determine how it was introduced into the service, so that they can prevent similar instances of impact from occurring in the future.