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Your password couldn't be changed in OWA 2013

Your users might get an error while changing their password through Outlook WebApp (Exchange 2013) stating:
Your password couldn't be changed. Make sure the old password you typed is correct and that the new password meets the minimmum security requirements.



On the other hand password change through Windows in Site 2 is successful. Password Group Policy is OK and it is working in primary site.

Setup:
Two sites | Two domain controllers, each in its own site

If Exchange servers are in other site than users trying to change their password, open port 464 in firewall for Exchange servers to let Exchange communicate with domain controller in other site.

Protocol and Port
AD and AD DS Usage
Type of traffic
TCP and UDP 464
Replication, User and Computer Authentication, Trusts
Kerberos change/set password

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