This document runs through how to call SharePoint Web Services from Nintex Workflow 2010 in an environment using forms based authentication.
I always get a "PasswordNotMatch" Error in the first step of Authenticate the user. Though the user id and password provided is correct it still gives an error. I included the domain name also, but still it gives an error.
Can you please tell what might be the reason?
Is the web application you are experincing the error in ustilising claims with forms based authentication? I've seen this happen in some environments that are using claims. Can you try appending the username with the claims designation (“i:0#.w|domain” for example) and see if it gets things working?