2025-10-29 - Microsoft 365 Services

Christian Delorey
Christian Delorey
  • Updated

Date: October 29, 2025

Data Center: 

Status: Resolved

Outage Resolved (October 30, 2025 – 8:05 AM EST 

Microsoft has confirmed that the underlying issues impacting Microsoft 365 and Azure Portal availability have been fully mitigated. All affected nodes have been restored to healthy operation, and services are now functioning as expected. 

Riva has confirmed normal operation across all monitored environments. No further action is required at this time. Riva will continue to monitor Microsoft service health channels for any follow-up information.


October 29, 2025 - 6:09 PM EST

Microsoft is reporting: 

Current status: We initiated the deployment of our ‘last known good’ configuration, which has now successfully completed. We are currently recovering nodes and re-routing traffic through healthy nodes.

As recovery progresses, some requests may still land on unhealthy nodes, resulting in intermittent failures or reduced availability until more nodes are fully restored. This recovery effort involves reloading configurations and rebalancing traffic across a large volume of nodes to restore full operational scale. The process is gradual by design, ensuring stability and preventing overload as dependent services recover. We expect continued improvement across affected regions. This means we expect recovery to happen by 23:20 UTC on 29 October 2025

Additional information can be found here: https://azure.status.microsoft/en-us/status

Riva will continue to monitor and post updates as new information becomes available.


October 29, 2025 - 4:04 PM EST

Microsoft is reporting: 

At this stage, we anticipate full mitigation within the next four hours as we continue to recover nodes. This means we expect recovery to happen by 23:20 UTC on 29 October 2025. 

We will provide another update on our progress within two hours, or sooner if warranted. Although we are seeing signs of recovery and have an estimated timeline, customers may also consider implementing failover strategies using Azure Traffic Manager to redirect traffic from Azure Front Door to their origin servers as an interim measure.

Additional information can be found here: https://azure.status.microsoft/en-us/status

Riva will continue to monitor and post updates as new information becomes available. 


October 29, 2025 - 12:50 PM EST

Summary

Microsoft has reported an ongoing availability issue affecting portions of the Azure Portal and related services.

The disruption began around 16:00 UTC and has been attributed to DNS-related issues within Microsoft’s infrastructure.

As of 16:35 UTC, Microsoft confirmed that mitigation actions are in progress and that portal access should begin recovering shortly. They are continuing to investigate the underlying root cause.

Impact on Riva

At this time, no direct impact on Riva Cloud or Riva Insight environments has been observed, and no incidents have been reported by customers.

However, as a precaution, we are monitoring for any indirect effects, particularly on:

  • Riva Insight (Web Add-ins) – users may experience an inability to load the add-in or degraded performance if Azure authentication or connectivity services are affected.

  • Connection Creation in Riva Cloud – establishing new connections to Microsoft 365 (Office 365) may be impacted if Azure services involved in authentication or token validation experience degradation.

Actions Taken

  • Our Cloud Operations team is actively monitoring Riva production environments for any signs of service degradation.

  • No service restarts or interventions have been required.

  • We are maintaining communication with Microsoft’s Azure Status and Service Health dashboards to track recovery progress.

Next Steps

  • Continue monitoring Azure’s mitigation progress.

  • Provide an update if Microsoft confirms customer-facing impact or once full service restoration is verified.

References