Microsoft 365 Alert – Service Degradation – Microsoft Suite – Some users are unable to access Outlook on the web or other Microsoft 365 services and features – RESOLVED

Announcements Habiba Tabasum

05/06/2023 16:40:00 PM (GMT)

NHSmail Reference : INC36229240

Microsoft Reference : EX571516/MO572252

Issue Status : RESOLVED

Issue Description : Users are unable to access Outlook on the web, and may experience issues with other Exchange Online service.

More info : Impacted services and features may include, but are not limited to:
Exchange Online
– Users are unable to access Outlook on the web
– Users may also experience issues with the search function in Outlook on the web, Outlook desktop client and the Outlook mobile application
– Users may also experience issues using the Outlook mobile application

Microsoft Teams
– Users may have difficulties scheduling meetings and/or live events
– Users may have trouble loading people profile cards
– Users may have issues loading file lists
– Users may not be able to create new teams & channels
– Users may not be able to install apps
– Users may have trouble issuing searches
– Users may see delays in admin policy changes taking effect
– Users might see errors when using messaging extensions
– Users may not see up to date Presence information
– Teams Graph APIs may be impacted
– Assignments tab in Teams may not load
– Teams Admin Center functionalities may not perform as expected

SharePoint Online, OneDrive for Business, Microsoft Bookings, Microsoft Power Automate and Power Apps in Microsoft 365 may also be experiencing some impact related to this issue.

Final Update : 09/06/2023 08:55:00 AM – Microsoft have completed an extended monitoring period without observing any further interruptions to their Microsoft 365 services related to this event. They’ll continue working to finalize all outstanding mitigation efforts and will provide further updates within the forthcoming Post-Incident Report.

Scope of impact : Users routed through the affected infrastructure are affected by this issue, however, impact can vary depending on where users are hosted.

Root cause : Further investigations are still on going and will be provided through the Post-Incident Report.

Next steps : Microsoft are continuing their investigations and will provide a Post-Incident Report with further information.