LangChain incident
Thread-scoped sandbox initialization timeouts on new agents
Minor Vendor's status page →
Resolved after 2 hours 18 minutes, affecting LangSmith Fleet, on September 4, 2026.
The fix has been deployed. All systems are operational
Affected components
LangSmith Fleet
Update timeline
- investigating Sep 04, 2026, 05:19 PM UTC
This is impacting the creation of new agents with a computer per thread configuration
- identified Sep 04, 2026, 06:12 PM UTC
We have identified the cause and are working on resolving the issue.
- monitoring Sep 04, 2026, 07:31 PM UTC
The fix has been deployed. All systems are operational
- resolved Sep 04, 2026, 07:38 PM UTC
All systems are operational
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