Microsoft 365 Alert : Service degradation – OneDrive for Business – External users are unable to access shared OneDrive for Business content – RESOLVED

Announcements Aftab Alam

26/04/2022 02:05:00 PM (BST)

Issue Reported : 26/04/2022 01:41:00 PM

Microsoft Reference : OD364554

NHSmail Reference : INC28606688

Issue Status : RESTORED

Issue Description : External users are unable to access shared OneDrive for Business content.

Scope of impact : Impact is specific to External users who are served through the affected infrastructure.

Final Update : 26/04/2022 03:58:00 PM – Microsoft has identified that a recent standard service update unexpectedly introduced a code regression which resulted in impact. They have reverted the change and confirmed by monitoring service telemetry that the impact has been remediated.

Root cause : A recent standard service update unexpectedly introduced a code regression which may have prevented external users from accessing shared OneDrive for Business content.

Next steps : Microsoft are reviewing their standard service update procedures to avoid similar impact in the future.