Installation of PES
In order to migrate the passwords between the two forests, we will need to configure and install PES.
Open a command prompt in Administrator and enter the following command, adapting to your situation:
admt key /option:create /sourcedomain:old.lan /keyfile:D:\Passwords\migpwd.pes /keypassword:password
Resolve the error during installation
It is possible that the password verification fails with the following message:
The supplied password does not match this encryption key’s password.
ADMT’s Password Migration Filter DLL will not install without a valid encryption key.
Close the installation wizard, open a command window in Administrator and enter the following command to adapt according to the location of the pwdmig.msi file:
msiexec -i C:\Apps\pwdmig.msi