Outage report · Partial outage
Smartsheet outage on Sep 21, 2026
Investigating blank page or error on Smartsheet Login
What happened
Smartsheet reported a partial outage starting Sep 21, 2026, 22:21 UTC, affecting Smartsheet Login. It was marked resolved at Sep 22, 2026, 03:43 UTC.
- The incident lasted 5h 22m from first report to resolution.
- Smartsheet had reported 7 other partial or major outages in the 90 days before it.
- 9 other vendors we track reported a significant incident within 12 hours of it.
Latest update from Smartsheet
On September 21, 2026, Smartsheet experienced intermittent login page loading issues across three regions between 11:42 AM and 3:30 PM PDT, impacting Australia from 11:42 AM to 12:34 PM PDT, Europe from 2:05 PM to 3:00 PM PDT, and the United States from 2:05 PM to 3:30 PM PDT. The issue was triggered during scheduled security maintenance on egress firewalls, where default load balancer routing maintained long-lived proxy connections to rebooting appliances rather than resetting and redirecting them immediately to healthy instances. Consequently, approximately 12% to 20% of users attempting to load the login page during these regional windows experienced intermittent timeouts, while existing authenticated user sessions remained unaffected and no data integrity was compromised. Service fully recovered across all regions by 3:30 PM PDT as connections refreshed, and automated TCP connection-reset configurations are being enabled on load balancers to ensure seamless failover during any fu
What our independent monitoring saw
Our independent monitoring of Smartsheet started after this incident, so this report is based on Smartsheet's status page.
Other outages around the same time
Significant incidents other vendors reported within 12 hours of this one.
Smartsheet's overall reliability
Smartsheet has a reliability score of 59.5/100, with 99.00% effective uptime and 8 incidents over the last 90 days.
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