Title: Users may be unable to open .MSG files that contain specific character codes in the SharePoint Online document library
User impact: Users may be unable to open .MSG files that contain specific character codes in the SharePoint Online document library.
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 the Outlook desktop client.
Current status: Our completed internal validations have confirmed the viability of the fix and we’re preparing it for deployment. We’re expecting that an updated timeline for the fix deployment will be available by our next scheduled update.
Scope of impact: This event may impact any users who attempt to open .MSG files that contain specific character codes in the SharePoint Online document library.
Start time: Friday, September 8, 2023, at 8:32 AM UTC
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 update by: Monday, October 30, 2023, at 8:30 PM UTC
