Resideo experienced a major incident on March 4, 2026 affecting Total Connect 2.0 and Resideo Smart Home and 1 more component, lasting 4h 32m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Mar 04, 2026, 03:04 AM UTC
We are aware some of our First Alert App, Resideo Smart Home App, and TC2 App customers are experiencing issues. Your device can still be used directly. We apologize for any inconvenience this may cause.
- investigating Mar 04, 2026, 03:47 AM UTC
Update: Users of the First Alert, Resideo Home, and TC2 applications may be experiencing issues with logging in, updating device status, and accessing Water Leak Detector, CX and VX camera features. Our teams are actively investigating and working to resolve the problem. Your device will continue to function locally and we sincerely apologize for any inconvenience this may cause. Alarm delivery is not impacted
- identified Mar 04, 2026, 06:01 AM UTC
Our teams continue to work to remediate the issues affecting logins, device status updates, and access to Water Leak Detector, CX, and VX camera features in the First Alert, Resideo Home, and TC2 applications. We are starting to see early signs of recovery as a result of the remediation actions underway. Resolving this remains our highest priority. We sincerely apologize for the ongoing inconvenience. Alarm Delivery is not impacted.
- resolved Mar 04, 2026, 07:36 AM UTC
All systems are operational.