Snowflake experienced a minor incident on June 12, 2026 affecting Developer Tools, lasting 2h 35m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Jun 12, 2026, 06:21 PM UTC
Current status: We're investigating an issue with stored procedures that use Snowpark External Access integrations. We'll provide an update within 1 hour. Customer experience: Customers hosted in the specified regions may see that stored procedures that use Snowpark External Access integrations may fail with the following SQL execution internal error: 300010:4004234085. Incident start time: 15:10 UTC June 12, 2026
- identified Jun 12, 2026, 07:14 PM UTC
Current status: Our investigation indicates the issue is related to a recent network configuration change affecting outbound connectivity for stored procedures that use Snowpark external access integrations. We are reverting the suspected change and manually correcting the affected network configuration to restore service as quickly as possible. We'll provide an update within 1 hour. Customer experience: Customers hosted in the specified regions may see that stored procedures that use Snowpark external access integrations may fail with the following SQL execution internal error: 300010:4004234085. ETA: Our current estimate is that service will be restored within 1 hour. Incident start time: 15:10 UTC June 12, 2026
- monitoring Jun 12, 2026, 07:53 PM UTC
Current status: We've fully reverted the impacting network configuration change, and our telemetry indicates that service health is recovering. 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 seen that stored procedures that use Snowpark external access integrations failed with the following SQL execution internal error: 300010:4004234085. Incident start time: 15:10 UTC June 12, 2026 Incident end time: 19:15 UTC June 12, 2026 Preliminary root cause: A misconfiguration introduced by a recent network configuration change affecting outbound connectivity for stored procedures that use Snowpark external access integrations resulted in impact.
- resolved Jun 12, 2026, 08:57 PM UTC
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 regions may have seen that stored procedures that use Snowpark external access integrations failed with the following SQL execution internal error: 300010:4004234085. Incident start time: 15:10 UTC June 12, 2026 Incident end time: 19:15 UTC June 12, 2026 Preliminary root cause: A misconfiguration introduced by a recent network configuration change affecting outbound connectivity for stored procedures that use Snowpark external access integrations resulted in impact. A root cause analysis (RCA) will be conducted and a summary will be shared on the Snowflake status page within 5 business days.
- postmortem Jun 22, 2026, 10:16 PM UTC
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/INC20000033](https://community.snowflake.com/s/article/INC20000033)