---
title: "open connection · RUAL Documentation"
description: "Opens a MSSQL connection."
canonical: https://docs.rual.nl/block-types/mssql/function_mssql_open_config_connection
language: en
---

# open connection

This block is part of the [`mssql`](https://docs.rual.nl/block-types/mssql) group and was last modified in core [`v10.4.28`](https://docs.rual.nl/core-versions/100428).

Opens a MSSQL connection.

- flow `flow`

- user required `value`

- password required `value`

- server required `value`

- database required `value`

- encrypt required `condition` Default `false`

- flow `flow`

- connection `mssqlconnection`

- error `value`

A typical wiring for [open connection](https://docs.rual.nl/block-types/mssql/function_mssql_open_config_connection): a [function trigger](https://docs.rual.nl/block-types/globals/trigger_custom_function) starts the flow; the `flow` out pin feeds [debug](https://docs.rual.nl/block-types/state%20ui/state_debug).

![Studio canvas example for the open connection block: typical wiring for open connection.](https://docs.rual.nl/canvas-examples/function_mssql_open_config_connection.png)

### Version history

Introduced in [`v10.4.28`](https://docs.rual.nl/core-versions/100428).