Microsoft 365 Alert – Service Degradation – Exchange Online – Users may be unable to view email content when opening PDF attachments in shared mailboxes in Outlook on the web – RESOLVED

Announcements Sourav Nandi

27/03/2025 08:35:00 AM

NHSmail Reference: INC46487721

Microsoft Reference: EX1041375

Issue Status: RESOLVED

Issue Description: Users may be unable to view email content when opening PDF attachments in shared mailboxes in Outlook on the web.

More info: Users see the following error message when attempting to open PDF attachments in Outlook on the web, “Your message can”t be displayed right now.”

Users can open PDF attachments in other Exchange Online clients to avoid the issue.

Final Update: 31/03/2025 07:56:00 AM – Microsoft have validated that the aforementioned fix has saturated throughout the affected infrastructure and remediated the issue.

Scope of impact: Any user trying to open PDF attachments in any shared mailbox in Outlook on the web may be impacted.

Next steps: Microsoft review their service update validation process to identify possible refinements in order to prevent similar instances of this issue in the future.