Outage in Customer.io
Investigating Connectivity Issues
Resolved MajorIncident Report
Summary AI Generated
Customer.io experienced connectivity issues that prevented users from accessing the web application, with customers encountering ERR_CONNECTION_REFUSED errors when trying to reach the UI. Message processing and delivery services continued to operate normally throughout the incident. The issue was resolved after 2.7 hours once the team identified the root cause and implemented a fix.
We are aware of an issue affecting access to our web application. Customers may encounter ERR_CONNECTION_REFUSED when attempting to access the UI.
At this time, we are not aware of any impact beyond UI accessibility. Message processing and delivery continue to operate normally.
Our team is actively investigating the issue and working to restore full service as quickly as possible.
We will provide updates as more information becomes available.
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Latest Updates ( sorted recent to last )
RESOLVED
3 days ago - at 06/14/2026 12:00AM
This incident has been resolved.
MONITORING
3 days ago - at 06/13/2026 11:46PM
A fix has been implemented and the systems are recovering.
We are monitoring UI for any other issue.
IDENTIFIED
3 days ago - at 06/13/2026 10:21PM
The team has identified the issue and is actively working on a fix
INVESTIGATING
3 days ago - at 06/13/2026 09:18PM
We are aware of an issue affecting access to our web application. Customers may encounter ERR_CONNECTION_REFUSED when attempting to access the UI.
At this time, we are not aware of any impact beyond UI accessibility. Message processing and delivery continue to operate normally.
Our team is actively investigating the issue and working to restore full service as quickly as possible.
We will provide updates as more information becomes available.
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