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AWS - Europe (London) Operational
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Replication Operational
Snowsight Operational
AWS - Europe (Paris) Operational
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Snowpipe (Data Ingestion) Operational
Replication Operational
Snowsight Operational
AWS - Europe (Zürich) Operational
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Snowpipe (Data Ingestion) Operational
Replication Operational
Snowsight Operational
AWS - Europe (Frankfurt) Operational
Snowflake Data Warehouse (Database) Operational
Snowpipe (Data Ingestion) Operational
Replication Operational
Snowsight Operational
AWS - Europe (Stockholm) Operational
Snowflake Data Warehouse (Database) Operational
Snowpipe (Data Ingestion) Operational
Replication Operational
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AWS - Asia Pacific (Mumbai) Operational
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Snowpipe (Data Ingestion) Operational
Replication Operational
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AWS - Asia Pacific (Singapore) Operational
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Snowpipe (Data Ingestion) Operational
Replication Operational
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AWS - Asia Pacific (Jakarta) Operational
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Snowpipe (Data Ingestion) Operational
Replication Operational
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AWS - Asia Pacific (Seoul) Operational
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AWS - Asia Pacific (Sydney) Operational
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AWS - Asia Pacific (Osaka) Operational
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AWS - Asia Pacific (Tokyo) Operational
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Replication Operational
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Azure - West US 2 (Washington) Operational
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Azure - South Central US (Texas) Operational
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Azure - Central US (Iowa) Operational
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Azure - Canada Central (Toronto) Operational
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Azure - East US 2 (Virginia) Operational
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Snowpipe (Data Ingestion) Operational
Replication Operational
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Azure - US Gov (Virginia) Operational
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Snowpipe (Data Ingestion) Operational
Replication Operational
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Azure - Mexico (Central) Operational
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Azure - North Europe (Ireland) Operational
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Azure - UK South (London) Operational
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Azure - West Europe (Netherlands) Operational
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Azure - Switzerland North (Zürich) Operational
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Azure - UAE North (Dubai) Operational
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Azure - Central India (Pune) Operational
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Azure - Southeast Asia (Singapore) Operational
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Azure - Japan East (Tokyo, Saitama) Operational
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Azure - Australia East (New South Wales) Operational
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GCP - US Central 1 (Iowa) Operational
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Replication Operational
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GCP - US East 4 (N. Virginia) Operational
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Replication Operational
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GCP - Europe West 2 (London) Operational
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Replication Operational
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GCP - Europe West 4 (Eemshaven) Operational
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Replication Operational
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GCP - Europe West 3 (Frankfurt) Operational
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GCP - Middle East (Dammam) Operational
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Replication Operational
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Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance

Scheduled Maintenance

Certificate Authority Update for AWS Regions Apr 26, 2025 13:32 - Apr 29, 2025 13:32 PDT

Update - We've revised the message below to reflect the most recent details of the issue.
Apr 27, 2025 - 21:05 PDT
Scheduled -

We've received reports that some customers hosted in AWS regions are experiencing certificate errors when using the Snowflake Python or Spark connectors to interact with AWS S3 external stages, and you may need to apply a temporary solution to work around the issue.



What happened?


Our findings indicate that the Python certifi library, which is used in specific Snowflake connectors, has recently been updated to remove trust for a legacy certificate previously used in the validation chain for S3 endpoints. The new version of the certifi certificate library (2025.4.26) exposed a latent code issue in the way that the Snowflake connector handles chain validation. Additional details will be provided in the customer-facing RCA, which will be shared following the release of an updated version of the connector.



How will this affect my service?


Customers hosted in AWS regions may encounter the error "The certificate is revoked or could not be validated" and are unable to use the Python and Spark connectors to perform specific operations that require an external AWS S3 stage with certificate check enabled. This issue primarily affects users who have recently upgraded the certifi library to version 2025.4.26.



What action do I need to take?


Potential temporary workarounds for customers with AWS EMR jobs may include the following:

  1. Reverting to the previous certifi library version (2025.1.31) to restore the recently removed certificate trust. Customers can revert to the previous version using “pip install certifi==2025.1.31”

  2. Configuring your Snowflake connector (Python/Spark) to operate in insecure_mode. This bypasses the certificate validation check (OCSP). Please be aware of the security implications before enabling this mode. Consult the connector documentation for instructions on enabling insecure_mode: https://community.snowflake.com/s/article/How-to-turn-off-OCSP-checking-in-Snowflake-client-drivers

  3. For customers running AWS Glue jobs, a possible workaround involves applying a Python environment change within your Glue job script or configuration, such as attempting to downgrade the certifi library manually.



As the permanent solution to this issue with the Snowflake connector, we’re planning to release an updated version by April 30. We’ll update this post should alternative solutions be identified or further relevant details emerge. For more information about the certifi library update, please see the change history: https://pypi.org/project/certifi/2025.4.26/. For more information about the certificate authority update, please see the related AWS blog post: https://aws.amazon.com/blogs/security/acm-will-no-longer-cross-sign-certificates-with-starfield-class-2-starting-august-2024/


Apr 26, 2025 - 13:31 PDT
Apr 29, 2025

No incidents reported today.

Apr 28, 2025

No incidents reported.

Apr 27, 2025

No incidents reported.

Apr 26, 2025

No incidents reported.

Apr 25, 2025

No incidents reported.

Apr 24, 2025

No incidents reported.

Apr 23, 2025

No incidents reported.

Apr 22, 2025

No incidents reported.

Apr 21, 2025

No incidents reported.

Apr 20, 2025
Resolved - 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.

Customer experience: Customers hosted in the specified regions may have been unable to access or use Snowflake services and features using Snowsight. Customers may have observed new trial account creations failing and/or a blank white page/500 error being returned upon logging into Snowsight. As an alternative, customers were able to log in using other methods, such as SnowSQL, connectors, etc.

Incident start time: 03:20 UTC April 21, 2025
Incident end time: 04:09 UTC April 21, 2025

Preliminary root cause: A third-party service provider experienced an issue upon completing a scheduled maintenance window, which affected the caching service used for logins to the Snowflake UI. Snowflake engineers were engaged and reverted to a secondary data system to mitigate impacts.

A root cause analysis (RCA) document will be published within ten business days.

Apr 20, 22:34 PDT
Monitoring - 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 regions may have been unable to access or use Snowflake services and features using Snowsight. Customers may have observed new trial account creations failing and/or a blank white page/500 error being returned upon logging into Snowsight. As an alternative, customers were able to log in using other methods, such as SnowSQL, connectors, etc.

Incident start time: 03:20 UTC April 21, 2025
Incident end time: 04:09 UTC April 21, 2025

Preliminary root cause: A third-party service provider experienced an issue upon completing a scheduled maintenance window, which affected the caching service used for logins to the Snowflake UI. Snowflake engineers were engaged and reverted to a secondary data system to mitigate impacts.

Apr 20, 21:36 PDT
Identified - Current status: We've identified the source of the issue, and we're developing and implementing a fix to restore service. We'll provide another update within 60 minutes.

Customer experience: Customers hosted in the specified regions may be unable to access or use Snowflake services and features using Snowsight. Customers may observe new trial account creations failing and/or a blank white page/500 error returned upon logging into Snowsight. As an alternative, customers can log in using other methods, such as SnowSQL, connectors, etc.

Incident start time: 03:20 UTC April 21, 2025

Apr 20, 20:59 PDT
Resolved - 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.

Customer experience: Customers hosted in the specified regions may have been unable to access or use Snowflake services and features using Snowsight. Customers may have observed new trial account creations failing and/or a blank white page/500 error returned upon logging into Snowsight. As an alternative, customers were able to log in using other methods, such as SnowSQL, connectors, etc.

Incident start time: 15:32 UTC April 20, 2025
Incident end time: 19:52 UTC April 20, 2025

Preliminary root cause: A third-party service provider experienced an issue upon completing a scheduled maintenance window, which affected the caching service used for logins to the Snowflake UI. Snowflake engineers were engaged and reverted to a secondary data system.

A root cause analysis (RCA) document will be published within ten business days.

Apr 20, 14:35 PDT
Monitoring - 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 regions may be unable to access or use Snowflake services and features using Snowsight. Customers may observe new trial account creations failing and/or a blank white page/500 error returned upon logging into Snowsight. As an alternative, customers can log in using other methods, such as SnowSQL, connectors, etc.

Incident start time: 15:32 UTC April 20, 2025
Incident end time: 19:52 UTC April 20, 2025

Preliminary root cause: A third-party service provider experienced an issue upon completing a scheduled maintenance window, which affected the caching service used for logins to the Snowflake UI. Snowflake engineers were engaged and reverted to a secondary data system.

Apr 20, 13:35 PDT
Identified - Current status: We've identified the source of the issue, and we're developing and implementing a fix to restore service. We'll provide another update within 60 minutes.

Customer experience: Customers hosted in the specified regions may be unable to access or use Snowflake services and features using Snowsight. Customers may observe new trial account creations failing and/or a blank white page/500 error returned upon logging into Snowsight. As an alternative, customers can log in using other methods, such as SnowSQL, connectors, etc.

Incident start time: 15:32 UTC April 20, 2025

Apr 20, 12:43 PDT
Investigating - Current status: We're investigating an issue with Snowflake Data Cloud. We'll provide an update within 60 minutes.

Customer experience: Customers hosted in the specified regions may be unable to access or use Snowflake services and features using Snowsight. Customers may observe new trial account creations failing and/or a blank white page/500 error returned upon logging into Snowsight. As an alternative, customers can log in using other methods, such as SnowSQL, connectors, etc.

Incident start time: 15:32 UTC April 20, 2025

Apr 20, 11:44 PDT
Apr 19, 2025

No incidents reported.

Apr 18, 2025

No incidents reported.

Apr 17, 2025

No incidents reported.

Apr 16, 2025
Postmortem - Read details
Apr 24, 08:54 PDT
Resolved - 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.

Customer experience: Customers hosted in the specified regions may have experienced delays while attempting to execute queries. Affected customers may have seen warehouses stuck in a "resuming" status. Additionally, replication to and from the specified region may have appeared stuck or delayed.

Incident start time: 18:53 UTC April 16, 2025
Incident end time: 19:42 UTC April 16, 2025

Preliminary root cause: An infrastructure component that facilitates part of the warehouse provisioning process entered a degraded state.

A root cause analysis (RCA) document will be published within seven business days.

Apr 16, 14:10 PDT
Monitoring - 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 regions may have experienced delays while attempting to execute queries. Affected customers may have seen warehouses stuck in a "resuming" status. Additionally, replication to and from the specified region may have appeared stuck or delayed.

Incident start time: 18:53 UTC April 16, 2025
Incident end time: 19:42 UTC April 16, 2025

Preliminary root cause: An infrastructure component that facilitates part of the warehouse provisioning process entered a degraded state.

Apr 16, 13:14 PDT
Identified - Current status: We've identified the source of the issue, and we're developing and implementing a fix to restore service. We'll provide another update within 60 minutes.

Customer experience: Customers hosted in the specified regions may experience delays while attempting to execute queries. Affected customers may see warehouses stuck in a "resuming" status.

Incident start time: 18:53 UTC April 16, 2025

Apr 16, 12:46 PDT
Investigating - Current status: We're investigating an issue with Snowflake Data Cloud. We'll provide an update within 60 minutes.

Customer experience: Customers hosted in the specified regions may experience delays while attempting to execute queries. Affected customers may see warehouses stuck in a "resuming" status.

Incident start time: 18:53 UTC April 16, 2025

Apr 16, 12:30 PDT
Apr 15, 2025

No incidents reported.