SQL Server PowerShell SMO – Simple way to Change SQL User Passwords

Here’s a simple PowerShell SMO code that shows you How-To change a SQL user password.  Keep in mind, SMO needs to be installed and the assemblies loaded before using this code.

To load SMO, you can:

1. Install the SQLPS Module (is using SQL Server 2012 “Denali”), or Chad’s Miller SQLPS module for SQL Server 2008/R2.

Import-Module SQLPS -DisableNameChecking

2. Or, Load the SMO Assemblies using the PowerShell V2 “AddType” command: (but carefull is you have multiple SQL Server versionsin the same box)

Add-Type -AssemblyName “Microsoft.SqlServer.Smo”

3. Or, use the still reliable the old PowerShell V1 load assemblies line using:


In the following example show how to connect to a SQL Server using both the default Windows Authentication (with high Administrator privileges already set), or SQL Server Authenbtication to later change a user password.

*Hint*: If you want to include special characters, you need to use the single qoutes or PowerShell will think that it’s a variable name.

As you can see,  with just a few line of PowerShell SMO code you can start orchestrating a solution that can be applied to your SQL Server environments.

Just try it!