Microsoft 365 Alert – Service Degradation – OneDrive for Business – Users may be unable to open .MSG files that contain specific character codes in OneDrive for Business – RESOLVED

Announcements Sourav Nandi

29/09/2023 09:10:00 AM (GMT)

NHSmail Reference : INC38577458

Microsoft Reference : OD678096

Issue Status : RESOLVED

Issue Description : Users may be unable to open .MSG files that contain specific character codes in OneDrive for Business.

More info : Affected users see the following error message: “Hmm… looks like this file doesn’t have a preview we can show you.”

Users can bypass the issue by downloading and opening affected .MSG files in Outlook.

Final Update : 31/10/2023 08:30:00 AM – The fix deployment has successfully saturated within the affected infrastructure and Microsoft have confirmed with your representatives that impact has been remediated.

Scope of impact : This event may impact any users who attempt to open .MSG files that contain specific character codes in OneDrive for Business.

Root cause : A third-party open source component contains an issue that is preventing users from opening .MSG files that contain specific character codes.

Next steps : Microsoft are continuing to investigate why the third-party open source component contained an issue to prevent similar instances in the future.