How can I create a PowerShell script to open the Windows “Change Password” screen automatically?

Honestly, I think the best solution is to enable password write-back. You'll save a lot of time compared to trying to work around the existing system. I would do it if it were up to me, but I know it can be a tough sell to management. Maybe present them with how much time could be saved?

You might want to look into setting a scheduled task that forces the change password prompt on login. That could be set to activate a week before the expiration. It could streamline the process for your users.

It's odd that IT needs to intervene for password changes. Normally, when a password expires, it prompts users to change it at login if they know their old password. If you're aiming for a self-service password reset (SSPR), consider third-party solutions instead of a script—like what we use from SpecOps. It's more efficient than piecing together something on PowerShell.

If a password expires, Windows should prompt users to change it automatically upon login. You might want to review your group policy settings instead of using a PowerShell script. But if you're still keen on a script, I've heard about using this command: (New-Object -COM Shell.Application).WindowsSecurity(). It doesn’t directly press the change password button though—it's more of an alternative.