Is Mio down?

Users are experiencing elevated message delivery latency on the messaging platform. Root cause is still under investigation.

We have identified the root cause of the issue causing elevated response times and delays across our messaging services for Microsoft users. Core services remain operational, but message delivery may be delayed while these events fail to process as expected. Our engineering team is actively working with Microsoft toward resolution. We will provide our next update as soon as new information becomes available.

The messaging latency was caused by a degraded Microsoft endpoint for managing lifecycle subscriptions. Microsoft has fixed the endpoint, and message delivery has returned to normal latency. No action required on our side.

This incident has been resolved.

We are currently investigating intermittent message delivery latency affecting a subset of users across platforms. Messages are continuing to be delivered, but some may experience delays during periods of elevated traffic. Our engineering team has identified instability within an underlying queueing component that is impacting throughput during traffic spikes. We are actively implementing infrastructure changes intended to improve long-term stability and resilience. Because these changes involve core messaging infrastructure, this incident may remain open while work is completed and performance is closely monitored. In the meantime, the platform remains operational, and messages continue to process and deliver. We will continue providing updates here as progress is made. Thank you for your patience.

We want to provide an update on Mio's current latency issues. A subset of users continues to experience minimal message delivery latency across platforms. Messages are being delivered, but delays continue to occur, particularly during periods of elevated traffic. Our engineering team has identified the root cause as instability in the underlying message queueing infrastructure. Under traffic spikes, the current system is not handling throughput at the level we require for consistent, reliable delivery. We are implementing meaningful infrastructure changes, and it is actively underway. In parallel, we have deployed additional capacity to the existing system to reduce the impact while the migration is completed. This incident will remain open until the migration is complete and performance has stabilized. If you are experiencing significant disruption, please reach out to our support team directly. Thank you for your continued patience.

Over the past week, we have seen a significant reduction in customer-reported impact related to message delivery latency. The infrastructure changes we implemented have stabilized throughput for the majority of affected users. Our engineering team continues to work on a longer-term solution to fully address the underlying cause. We are in the process of validating these changes in our internal environment before broader deployment. We will provide a timeline for that deployment with our next update.

Following successful internal testing, we have deployed the first phase of our solution to address the underlying messaging infrastructure issues. Development fixes are now being rolled out across customer environments. We are closely monitoring system performance and throughput as these changes take effect, and we will provide a completion timeline in our next update.

Over the past two weeks, our engineering team has made significant progress in addressing the underlying cause of this incident. Message delivery performance has stabilized with latency returning to normal operating ranges. The infrastructure improvements we implemented have proven effective, and we have been monitoring the system closely to confirm sustained stability before closing this incident. We are satisfied that the platform is performing as expected. We recognize this incident remained open longer than we would have liked, and we appreciate your patience. If you continue to experience any delays in message delivery, please contact us.

This incident has been resolved.