Changes / Snowflake / INC20000047
Snowflake: Major incident: INC20000047
Summary
Snowflake’s major outage affected Streamlit apps, Notebooks and other Snowpark Container Services in AWS - US West (Oregon). Customer impact began at 15:20 UTC June 23, 2026; the recorded incident ran from 2026-06-23 17:01 UTC to 2026-06-24 07:30 UTC (14 h 29 min). Restarting affected infrastructure restored remaining services.
Machine-written from the diff below (Sol; type: incident outage). Check the diff before relying on it.
What changed
Before: not present
After: INC20000047
Before: not present
After: major
Before: not present
After: postmortem
Before: not present
After: 2026-06-23 17:01 UTC
Before: not present
After: 2026-06-24 07:30 UTC
Before: not present
After: Applications, AWS - US West (Oregon) - Applications, AWS - US West (Oregon) - Snowpark Container Services, Snowpark Container Services
Before: not present
After: Current status: We're investigating an issue with Snowflake Data Cloud. We'll provide an update within 1 hour.
Customer experience: Customers hosted in the specified region may be unable to access or launch Streamlit apps or other services and features that rely on Snowpark Container Services.
Incident start time: 15:20 UTC June 23, 2026
Before: not present
After: Current status: We're continuing to investigate the issue affecting Snowpark Container Services to determine its source. We'll provide another update within 1 hour.
Customer experience: Customers hosted in the specified region may be intermittently unable to access or launch Streamlit apps or may experience issues with other services and features that rely on Snowpark Container Services.
Incident start time: 15:20 UTC June 23, 2026
Before: not present
After: Current status: We've narrowed our investigation and remained focused on identifying a mitigation to address the impact to Snowpark Container Services. We'll provide another update within 2 hours.
Customer experience: Customers hosted in the specified region may be unable to access or launch Streamlit apps or may experience connection timeouts and receive a "Connection error" when interacting with other services and features that rely on Snowpark Container Services.
ETA: An ETA is not yet available. We'll provide one as soon as possible.
Workaround: There are currently no available workarounds for this issue.
Incident start time: 15:20 UTC June 23, 2026
Before: not present
After: Current status: We have narrowed the investigation to a request handling and authentication path for affected services. While the exact root cause is still under investigation, our teams have ruled out some earlier hypotheses and are actively evaluating potential mitigation actions.
We'll provide another update within 2 hours.
Customer experience: Customers hosted in the specified region may be intermittently unable to access or launch Streamlit apps, or may experience issues with other services and features that rely on Snowpark Container Services, such as Notebooks. Users may experience connection timeouts and receive a "Connection error" when interacting with affected services.
ETA: An ETA is not yet available. We'll provide one as soon as possible.
Workaround: There are currently no available workarounds for this issue.
Incident start time: 15:20 UTC June 23, 2026
Before: not present
After: Current status: We've narrowed the issue to the request handling and authentication path for the affected services, and we're now applying and testing mitigation actions to restore service. We'll provide another update within 3 hours.
Customer experience: Customers hosted in the specified region may be intermittently unable to access or launch Streamlit apps, or may experience issues with other services and features that rely on Snowpark Container Services, such as Notebooks. Users may experience connection timeouts and receive a "Connection error" when interacting with affected services.
ETA: An ETA is not yet available. We'll provide one as soon as possible.
Workaround: There are currently no available workarounds for this issue.
Incident start time: 15:20 UTC June 23, 2026
Before: not present
After: Current status: We've identified the issue and deployed a two-part mitigation to address it, which included adding resources to the affected infrastructure and reverting a change. Affected services are recovering, and we're working to confirm full restoration. We'll provide another update within 2 hours.
Customer experience: Customers hosted in the specified region may be intermittently unable to access or launch Streamlit apps, or may experience issues with other services and features that rely on Snowpark Container Services, such as Notebooks. Users may experience connection timeouts and receive a "Connection error" when interacting with affected services.
ETA: An ETA is not yet available. We'll provide one as soon as possible.
Workaround: There are currently no available workarounds for this issue.
Incident start time: 15:20 UTC June 23, 2026
Before: not present
After: Current status: We're continuing to validate recovery and address residual impact. We'll provide another update within 2 hours.
Customer experience: Customers hosted in the specified region may be intermittently unable to access or launch Streamlit apps, or may experience issues with other services and features that rely on Snowpark Container Services, such as Notebooks. Users may experience connection timeouts and receive a "Connection error" when interacting with affected services.
ETA: An ETA is not yet available. We'll provide one as soon as possible.
Workaround: There are currently no available workarounds for this issue.
Incident start time: 15:20 UTC June 23, 2026
Before: not present
After: Current status: We restarted the affected infrastructure and confirmed it fully restored the remaining affected services. We'll continue to monitor the environment until we're confident all services are functioning properly. We'll provide another update within 1 hour.
Customer experience: Customers hosted in the specified region may have been intermittently unable to access or launch Streamlit apps, or may have experienced issues with other services and features that rely on Snowpark Container Services, such as Notebooks. Users may have experienced connection timeouts and received a "Connection error" when interacting with affected services.
Workaround: There were no available workarounds for this issue.
Incident start time: 15:20 UTC June 23, 2026
Incident end time: 05:10 UTC June 24, 2026
Preliminary root cause: A subset of infrastructure responsible for processing service requests experienced degraded performance, which prevented requests from completing and caused connectivity failures for services that rely on Snowpark Container Services.
Before: not present
After: Current status: We've implemented the fix for this issue and monitored the environment to confirm that service was restored. If you experience additional issues or have questions, please open a support case via Snowflake Community or the Support page in Snowsight.
Customer experience: Customers hosted in the specified region may have been intermittently unable to access or launch Streamlit apps, or may have experienced issues with other services and features that rely on Snowpark Container Services, such as Notebooks. Users may have experienced connection timeouts and received a "Connection error" when interacting with affected services.
Workaround: There were no available workarounds for this issue.
Incident start time: 15:20 UTC June 23, 2026
Incident end time: 05:10 UTC June 24, 2026
Preliminary root cause: A subset of infrastructure responsible for processing service requests experienced degraded performance, which prevented requests from completing and caused connectivity failures for services that rely on Snowpark Container Services.
A root cause analysis (RCA) will be conducted and a summary will be shared on the Snowflake status page within 5 business days.
Before: not present
After: Snowflake Engineering has completed the postmortem of this service incident. A detailed Root Cause Analysis \(RCA\) is available on the Snowflake Community site: [https://community.snowflake.com/s/article/INC20000047](https://community.snowflake.com/s/article/INC20000047)
First version of this incident archived by Rewindex. View the live incident (opens in new tab).
History of this incident
| When (UTC) | Change | Kind |
|---|---|---|
| Major incident: INC20000047 (this change) Snowflake’s major outage affected Streamlit apps, Notebooks and other Snowpark Container Services in AWS - US West (Oregon). Customer impact began at 15:20 UTC June 23, 2026; the recorded incident ran from 2026-06-23 17:01 UTC to 2026-06-24 07:30 UTC (14 h 29 min). Restarting affected infrastructure restored remaining services. | Major incident |
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