- Level
- confirmed
- Worst impact
- Partial outage
- Components
- US-West
- Regions
- us, us-west-1
- Down Index
- 36of 100
What to do
Check whether you use Sauce Labs US-West in us, us-west-1. 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 1h 15m it lasted.
Anything that failed between 2026-09-28 16:04 UTC and 2026-09-28 17:19 UTC may need a replay.Subscribe to Sauce Labs's feed to hear about the next one first. RSS feed
https://down.guide/feed?provider=saucelabs works in Slack (/feed subscribe), Discord feed bots and any RSS reader.
Root cause
The root cause of the elevated error rates for Real Device tests in the US-West-1 data center has been identified.
Category: Data center or power
Read the postmortemUpdates from Sauce Labs 4
- investigating
We are currently seeing elevated error rates for automated real device tests in US-West-1 data center. We are currently investigating.
provider
- monitoring
The root cause of the elevated error rates for Real Device tests in the US-West-1 data center has been identified. Remediation has been applied, and we are actively monitoring the situation.
provider
- resolved
After taking remedial action, Real Device test error rates have returned to normal in the US-West-1 data center. All services are fully operational.
provider
- postmortem
### **Dates:** Monday, September 28th 2026, 14:19 UTC - 16:52 UTC. ### **What happened:** Real device tests in US West hung and failed to output test artifacts due to slow uploads. ### **Why it happened:** A degraded interconnect link suffered high packet loss from optical errors, but BGP stayed up, preventing automatic failover to healthy paths. ### **How we fixed it:** Manually disabled the degraded port on the edge router, forcing traffic onto healthy alternate interconnects. ### **What we are doing to prevent it from happening again:** Automating link draining based on CRC error thresholds, improving protocols for isolating flapping vendor links, and hardening upload resilience.
provider
Reports count in aggregate; nothing about you is shown.
Corrections
None so far.
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Questions about DWN-8a2d32bc38
Is Sauce Labs still down?
No, this incident was resolved 2026-09-28 17:19 UTC. For Sauce Labs's live state, see https://down.guide/saucelabs.
How long did it last?
1h 15m, from 2026-09-28 16:04 UTC to 2026-09-28 17:19 UTC, by the times Sauce Labs posted.
What was affected?
Sauce Labs named US-West in us, us-west-1.
What caused it?
Data center or power. Sauce Labs wrote: "The root cause of the elevated error rates for Real Device tests in the US-West-1 data center has been identified." The postmortem: https://stspg.io/551m8dbsyvqd
Where does this come from?
Sauce Labs's official status page, https://status.saucelabs.com, quoted verbatim. down.guide's own probes, reports and social counts are labeled as ours.