Circle.so experienced a major incident on October 21, 2025 affecting Circle Android App, lasting 4h 57m. The incident has been resolved; the full update timeline is below.
Affected components
Circle Android App
Update timeline
- investigating Oct 21, 2025, 01:55 PM UTC
We are experiencing instability on a small percentage of Android devices and are currently investigating the issue.
- resolved Oct 21, 2025, 06:53 PM UTC
This incident has been resolved.
- postmortem Oct 21, 2025, 06:59 PM UTC
Some older Android devices couldn’t connect after new SSL certificates were installed. The new Sectigo certificate required a root certificate that older Android versions didn’t have, causing the connection failures. We fixed the issue by adding the missing intermediate certificates, and all affected Android devices are now working properly.