PassCore 4.0.0 Server

• OS: Windows Server 2012 R2 (domain-joined)
• Provider: Active Directory
• PassCore AppPool runs with "LocalSystem"

I get the error "You need to provide the correct current password." when I try to change a password when it is expired.

Is there a way to solve it ? With reference to Cannot Change Expired Password -- Version 3.4.2 #225
Using a privileged "service account" for AppPool ?

Thank you,
Luca