Changes / Snowflake / INC20000158
Snowflake: Critical incident: INC20000158
Summary
Snowflake reported a critical Snowsight outage in Azure - East US 2 (Virginia), blocking access/sign-in with “503 Service Unavailable” errors. Recorded from 2026-08-14 17:29 UTC to 2026-08-14 19:35 UTC (2 h 5 min), customer impact reportedly began at 17:05 UTC August 14, 2026. Snowflake implemented a fix for a system configuration issue and confirmed service restoration.
Machine-written from the diff below (Sol; type: incident outage). Check the diff before relying on it.
Incident page: full timeline of updates →
What changed
Before: not present
After: INC20000158
Before: not present
After: critical
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After: postmortem
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After: 2026-08-14 17:29 UTC
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After: 2026-08-14 19:35 UTC
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After: Applications, Azure - East US 2 (Virginia) - Applications
Before: not present
After: Current status: We're investigating an issue with Snowflake Data Cloud. We'll provide an update within 30 minutes.
Customer experience: Customers hosted in the specified regions may be unable to access or use multiple core Snowflake services and features using Snowsight. Affected users may be unable to sign in and may observe "503 Service Unavailable" errors.
Incident start time: 17:05 UTC August 14, 2026
Before: not present
After: Current status: We've identified a system configuration issue affecting Snowsight, and we're implementing a fix to restore service. We'll provide another update within 30 minutes.
Customer experience: Customers hosted in the specified region may be unable to access or use Snowsight and may observe "503 Service Unavailable" errors.
ETA: Our current estimate is that service will be restored within 30 minutes.
Workaround: There are currently no available workarounds for this issue.
Incident start time: 17:05 UTC August 14, 2026
Before: not present
After: Current status: We've implemented the fix for this issue, and we'll continue to monitor the environment until we're confident all services are functioning properly.
Customer experience: Customers hosted in the specified region may have been unable to access or use Snowsight and may have seen "503 Service Unavailable" errors.
Incident start time: 17:05 UTC August 14, 2026
Incident end time: 18:12 UTC August 14, 2026
Preliminary root cause: A routine system configuration change intended to optimize performance caused elevated latency in the metadata layer, resulting in service disruptions. Once identified, the configuration was reverted and affected service infrastructure was restarted to restore service.
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 be unable to access or use Snowsight and may observe "503 Service Unavailable" errors.
Incident start time: 17:05 UTC August 14, 2026
Incident end time: 18:12 UTC August 14, 2026
Preliminary root cause: A routine system configuration change intended to optimize performance caused elevated latency in the metadata layer, resulting in service disruptions. Once identified, the configuration was reverted and affected service infrastructure was restarted to restore service.
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/INC20000158](https://community.snowflake.com/s/article/INC20000158)
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History of this incident
| When | Change | Kind |
|---|---|---|
| Critical incident: INC20000158 (this change) Snowflake reported a critical Snowsight outage in Azure - East US 2 (Virginia), blocking access/sign-in with “503 Service Unavailable” errors. Recorded from 2026-08-14 17:29 UTC to 2026-08-14 19:35 UTC (2 h 5 min), customer impact reportedly began at 17:05 UTC August 14, 2026. Snowflake implemented a fix for a system configuration issue and confirmed service restoration. | Major incident |
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