Changes / Smartsheet / Smartsheet and Smartsheet Login Unavailable for Smartsheet US
Smartsheet: Major incident: Smartsheet and Smartsheet Login Unavailable for Smartsheet US
Summary
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.
Machine-written from the diff below (Sol; type: incident outage). Check the diff before relying on it.
What changed
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After: Smartsheet and Smartsheet Login Unavailable for Smartsheet US
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After: major
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After: postmortem
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After: 2026-09-11 20:20 UTC
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After: 2026-09-11 23:29 UTC
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After: Core Application - Dashboards, Core Application - Forms, Core Application - Reports, Core Application - Sheets, Core Application - Single Sign On ( Company Credentials ), Core Application - Smartsheet Login, Dashboards, Forms, Reports, Sheets, Single Sign On ( Company Credentials ), Smartsheet Login
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After: We're currently investigating reports of login and access failures affecting all users, with the app displaying the error "We're having trouble reaching Smartsheet right now." Our team is actively working on a resolution and will share frequent updates until the issue reaches monitoring status.
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After: We've identified the issue and implemented a change, which has resulted in Smartsheet loading and users being able to log in successfully. However, an error message is still appearing on the home screen during a hard refresh. Our team is continuing to investigate this remaining issue and will provide updates as we work toward full resolution.
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After: The change we implemented has resolved the login and access issues, and Smartsheet is now loading successfully for all users. Things appear stable at this time. We are continuing to monitor the situation closely and will provide an update once we've confirmed full resolution.
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After: This incident has been resolved.
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After: On September 11th, 2026, starting at 12:47 PM PDT, users in the US began experiencing errors logging in to and accessing Smartsheet. Users in the EU and AU regions were not affected. By approximately 1:38 PM PDT, full service was confirmed to be restored.
Our engineering teams quickly determined that a routine internal configuration change was the cause of Smartsheet's unavailability.
The change was corrected, and full service was restored by approximately 1:38 PM PDT. We are currently reviewing our configuration management and change review processes, along with our internal monitoring, to prevent similar issues in the future.
First version of this incident archived by Rewindex. View the live incident.
History of this incident
| When (UTC) | Change | Kind |
|---|---|---|
| Major incident: Smartsheet and Smartsheet Login Unavailable for Smartsheet US (this change) 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. | Major incident |
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