Module Version: 4.0.0
Puppet Version: 2017.2.1
OS Name/Version: Windows Server 2012 R2
Describe your issue in as much detail as possible...
Everytime Puppet runs it reapplies the username and password to the application pool
Run once, only change if needed
Please take a moment and attach any relevant log output and/or manifests. This will help us immensely when troubleshooting the issue.