Cisco CES incident
Secure Email Incident - O365 Service Degradation - 2026-01-22
Resolved after 8 hours 46 minutes, affecting Others/General Maintenance, on January 22, 2026.
As of Jan 23rd 2026 5:32:25 AM UTC, Microsoft has confirmed that Exchange Online mail flow is resolved and remains stable.
Affected components
Update timeline
- monitoring Jan 22, 2026, 09:15 PM UTC
What : Microsoft is currently experiencing service degradation within their Office 365 (O365) environment. For the latest updates, please visit: https://status.cloud.microsoft/ Impact Details : Customers may observe a backlog of active email recipients pending delivery to O365. Problem Symptoms : Delays or queuing of email recipients pending delivery to O365. Workaround/Solution : There is no workaround or solution available at this time. Recommendations : We are actively monitoring updates from Microsoft and will continue to provide timely information as the situation evolves. There is no need to contact us regarding this incident. We will proactively communicate any significant changes or resolutions to our customers. If you have any urgent questions about this incident or the possible impact, please get in touch with Cisco TAC: http://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html
- resolved Jan 23, 2026, 06:01 AM UTC
As of Jan 23rd 2026 5:32:25 AM UTC, Microsoft has confirmed that Exchange Online mail flow is resolved and remains stable.
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