Smartsheet change history: Smartsheet and Smartsheet Login Unavailable for Smartsheet US

Smartsheet reported a major US outage affecting login and application access, starting 2026-09-11 20:20 UTC and resolved at 2026-09-11 23:29 UTC (3 h 9 min). EU and AU were unaffected; the postmortem attributed the outage to a routine internal configuration change, which was corrected.