# 550032: Warehouse connection failed

Log Type: TWILIO

Log Level: ERROR

## Description

Twilio cannot establish a connection to the warehouse. Unlike error 550019 (warehouse unavailable), this error represents a connection-level failure—the TCP/TLS handshake or initial session setup failed before any query was sent. The issue is usually related to an incorrect host, port, or network-access rule.

### Possible causes

* The warehouse host or port in the source configuration is incorrect or has changed.
* A firewall, VPC security group, or network policy blocks inbound connections from Twilio's IP ranges to the warehouse endpoint.
* The warehouse requires an allowlist of IP addresses, and Twilio's addresses have not been added.
* A TLS/SSL configuration mismatch exists between Twilio's client and the warehouse server.

### Possible solutions

* Verify that the host, port, and account identifier in your source configuration match your warehouse provider's current connection details.
* Add Twilio's IP ranges to your warehouse's network allowlist or VPC security-group inbound rules. Refer to the Twilio documentation for the current list of egress IP addresses.
* For Snowflake, confirm that your account identifier (for example, `<org>-<account>`) is correct and that the warehouse endpoint is reachable from outside your corporate network.
* After making changes, select **Validate configuration** in the **Twilio Console** to test connectivity.