INC20000301

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/INC20000301](https://community.snowflake.com/s/article/INC20000301)

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 unable to access or use multiple Snowflake services and features. Affected users may have been unable to sign in, use Snowsight, execute queries, resume virtual warehouses, or ingest files using Snowpipe or Snowpipe Streaming. Scheduled tasks and other automated workloads may also have failed to run or may not start as expected. Impact start time: 17:50 UTC October 21, 2026 Impact end time: 21:25 UTC October 21, 2026 Preliminary root cause: A configuration change applied to the cloud services layer in the specified region interacted with existing settings in a way that caused a significant number of instances to be taken out of service. This led to ca

Current status: Our monitoring indicates that the previously affected services have returned to normal operation. 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 multiple Snowflake services and features. Affected users may have been unable to sign in, use Snowsight, execute queries, resume virtual warehouses, or ingest files using Snowpipe or Snowpipe Streaming. Scheduled tasks and other automated workloads may also have failed to run or may not start as expected. Impact start time: 18:00 UTC October 21, 2026 Impact end time: 21:25 UTC October 21, 2026 Preliminary root cause: A configuration change applied to the cloud services layer in the specified region interacted with existing settings in a way that caused a significant number of instances to be taken out of service. This led to cascading failures across sign-in, query execution

Current status: Services in the specified region are recovering, and our monitoring indicates that most core services, including sign-in, Snowsight, query execution, and data ingestion, are returning to normal operation. We're continuing to monitor to confirm full recovery across all services. We'll provide another update within 30 minutes. Customer experience: Customers hosted in the specified region may be unable to access or use multiple core Snowflake services and features. Affected users may be unable to sign in, use Snowsight, execute queries, resume virtual warehouses, or ingest files using Snowpipe or Snowpipe Streaming. Scheduled tasks and other automated workloads may also fail to run or may not start as expected. Impact start time: 18:00 UTC October 21, 2026 Preliminary root cause: A recent configuration change in the affected region caused service infrastructure to stop processing requests, resulting in a service disruption.

Current status: We're continuing to monitor the affected region, and we're seeing early signs of recovery. Affected services are recovering gradually, and we're working to confirm full restoration. We'll provide another update within 30 minutes. Customer experience: Customers hosted in the specified region may be unable to access or use multiple core Snowflake services and features. Affected users may be unable to sign in, use Snowsight, execute queries, resume virtual warehouses, or ingest files using Snowpipe or Snowpipe Streaming. Scheduled tasks and other automated workloads may also fail to run or may not start as expected. ETA: Our current estimate is that service will be restored within 1 hour. Impact start time: 18:00 UTC October 21, 2026

Current status: We've completed a configuration change to address the issue that we suspect caused the impact while we continue to investigate other potential factors. We're also monitoring the region for signs of recovery and are continuing to work on restoring full service. We'll provide another update within 30 minutes. Customer experience: Customers hosted in the specified region may be unable to access or use multiple core Snowflake services and features. Affected users may be unable to sign in, use Snowsight, execute queries, resume virtual warehouses, or ingest files using Snowpipe or Snowpipe Streaming. Scheduled tasks and other automated workloads may also fail to run or may not start as expected. ETA: An ETA is not yet available. We'll provide one as soon as possible. In the meantime, customers using replication may review their failover procedures and determine whether failover is warranted based on the impact to their organization.

Current status: We've identified a configuration issue within the core systems which process requests in the impacted region that we suspect is contributing to impact, and we're further investigating this issue to confirm our findings and identify a method 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 multiple core Snowflake services and features. Affected users may be unable to sign in, use Snowsight, execute queries, resume virtual warehouses, or ingest files using Snowpipe or Snowpipe Streaming. Scheduled tasks and other automated workloads may also fail to run or may not start as expected. ETA: An ETA is not yet available. We'll provide one as soon as possible. In the meantime, customers using replication may review their failover procedures and determine whether failover is warranted based on the impact to their organization. Impact start time: 18:00 UTC October 21, 2

Current status: We're continuing to investigate the core systems that process requests in the impacted region to assist us in isolating the root cause of this issue. We'll provide another update within 30 minutes. Customer experience: Customers hosted in the specified region may be unable to access or use multiple core Snowflake services and features. Affected users may be unable to sign in, use Snowsight, execute queries, or ingest files using Snowpipe. ETA: An ETA is not yet available. We'll provide one as soon as possible. In the meantime, customers using replication may review their failover procedures and determine whether failover is warranted based on the impact to their organization.

Current status: We're investigating the core systems that process requests in the impacted region to assist us in isolating the source of the impact and identifying a path to resolution. We'll provide another update within 30 minutes. Customer experience: Customers hosted in the specified region may be unable to access or use multiple core Snowflake services and features. Affected users may be unable to sign in, use Snowsight, execute queries, or ingest files using Snowpipe.

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. Affected users may be unable to sign in, use Snowsight, or ingest files using Snowpipe.