- Level
- confirmed
- Worst impact
- Partial outage
- Components
- Smartsheet Login
- Regions
- au, eu, us
- Down Index
- 43of 100
What to do
Check whether you use Smartsheet Smartsheet Login in au, eu, us. Check your stack
Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.Confirm your retries, queues and scheduled jobs caught up after the 5h 22m it lasted.
Anything that failed between 2026-09-21 22:21 UTC and 2026-09-22 03:43 UTC may need a replay.Subscribe to Smartsheet's feed to hear about the next one first. RSS feed
https://down.guide/feed?provider=smartsheet works in Slack (/feed subscribe), Discord feed bots and any RSS reader.
Updates from Smartsheet 4
- investigating
We are investigating an issue where some customers encounter an intermittent blank page or the error "upstream request timeout" attempting to access the Smartsheet Login page at app.smartsheet.com. Our team is fully engaged in addressing the situation. We will provide frequent updates until we reach a monitoring status.
provider
- monitoring
We are observing stability being restored for Smartsheet Login. We are continuing to monitor it closely to confirm full service stability. We will provide frequent updates until we reach a resolved status.
provider
- resolved
Smartsheet Login functionality has been fully restored and is operating normally. The incident is now resolved.
provider
- postmortem
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 future appliance maintenance.
provider
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Corrections
None so far.
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Questions about DWN-7b33ed1153
Is Smartsheet still down?
No, this incident was resolved 2026-09-22 03:43 UTC. For Smartsheet's live state, see https://down.guide/smartsheet.
How long did it last?
5h 22m, from 2026-09-21 22:21 UTC to 2026-09-22 03:43 UTC, by the times Smartsheet posted.
What was affected?
Smartsheet named Smartsheet Login in au, eu, us.
What caused it?
Smartsheet hasn't published a root cause. If it does, it shows here.
Where does this come from?
Smartsheet's official status page, https://status.smartsheet.com, quoted verbatim. down.guide's own probes, reports and social counts are labeled as ours.