Pulsant experienced a major incident on October 29, 2025, lasting 17h 46m. The incident has been resolved; the full update timeline is below.
Update timeline
- investigating Oct 29, 2025, 05:03 PM UTC
We are aware of issues currently affecting Microsoft's global services, which may be impacting Outlook and other Microsoft Services. Clients who need support should use the client portal or contact the service desk by phone on: 0345 119 9900
- investigating Oct 29, 2025, 05:03 PM UTC
We are continuing to investigate this issue.
- monitoring Oct 29, 2025, 07:18 PM UTC
Microsoft are deploying a previous healthy configuration to the affected portions of infrastructure to resolve this issue. This is being done in tandem with efforts to rebalance traffic across healthy infrastructure to achieve recovery as quickly as possible. This outage was caused by a problematic configuration change that was applied to a portion of Azure infrastructure by Microsoft. Pulsant will continue to monitor as we see service restoration.
- resolved Oct 30, 2025, 10:49 AM UTC
All Microsoft 365 Services have been restored and are fully operational.