We have migrated the sharepoint / nintex to a new server farm. the SQL portion was updated from 2008 to 2012.
We use UpdateXml action in a UDA with WF Constant to provide credentials.
We have tried rebuilding Creds at the farm level and giving the specific credentials. A test WF was create and used the UpdateXML directly rather than in a UDA and we get the same problem.
We have verified the credentials account and password. reviewed permissions in the sharepoint server and SQL database. where else do we need to look for the problem?