Microsoft 365 Alert – Service Degradation – Exchange Online – Some users may be unable to accept calendar sharing invites in Outlook on the web – RESOLVED
11/07/2024 09:25:00 AM
NHSmail Reference: INC44231294
Microsoft Reference: EX803094
Issue Status: RESOLVED
Issue Description: Users may be unable to accept calendar sharing invites in Outlook on the web.
More info: This issue occurs when invites are shared to external users; those who are inviting users internal to their organization aren’t impacted by this event. Impact is further limited to users that are on Windows 11 or the 64-bit version of Windows 10. Those who are on the 32-bit version of Windows are unaffected.
Final Update: 22/07/2024 15:28:00 PM – Microsoft have concluded the process of deploying their fix to the affected infrastructure, and have confirmed through testing in their internal environments alongside analysis of service monitoring telemetry that impact to end users has been remediated.
Scope of impact: Users who are attempting to accept calendar sharing invites that are external from their organization and are on either Windows 11 or the 64-bit version of Window 10 may be impacted.
Root cause: A code issue within a section of Outlook on the web service infrastructure was causing the inability to accept calendar invites in Outlook on the web.
Next steps: Microsoft are reviewing our Outlook on the web service infrastructure code to identify potential similar issues, to reduce or avoid similar impact in the future.