DirXML PWFILTER.DLL is a component used for Password Flow From Active Directory to eDirectory
DirXML PWFILTER.DLL is used when using the Microsoft Active Directory Driver and Password Synchronization is desired. We use it to represent several processes which actually intercept the password at each Domain Controller
The file is located in the folder defined by %SYSTEMDIRECTORY% (usually /windows/system32)
DirXML PWFILTER.DLL is an AD Password Filter