Microsoft 365 Alert – Service Degradation – OneDrive for Business – Some users’ may incorrectly receive a security warning prompt when opening Excel files in OneDrive for Business – RESOLVED

Announcements Sourav Nandi

31/07/2024 11:40:00 AM

NHSmail Reference: INC44734115

Microsoft Reference: OD843843

Issue Status: RESOLVED

Issue Description: Some users’ may incorrectly receive a security warning prompt when opening Excel files in OneDrive for Business.

More info: More specifically, users’ may have incorrectly received a security prompt when opening Excel, PowerPoint, or Word files in their respective web apps within OneDrive for Business. Also, affected users may have seen the following message “This content presents a potential issue”.

Final Update: 14/08/2024 08:34:00 AM – The fix finished deploying and Microsoft have confirmed through telemetry that impact was remediated. Some users may need to restart their devices for the fix to take effect.

Scope of impact: Impact was specific to some users’ who were served through the affected infrastructure, and the problem impacted users attempting to open Excel, PowerPoint, or Word files in their respective OneDrive for Business web app.

Root cause: A necessary short-term fix for a separate issue was recently implemented, causing users to receive a security warning prompt when opening Excel, PowerPoint, or Word files in OneDrive for Business.

Next steps: To help prevent similar impact in the future, Microsoft are further reviewing their fix release procedures to identify issues before being deployed.