User password change?

Question

Active Directory

Good afternoon!
There is an AD 2003-2008R2 domain. The problem came to light - users cannot change the password themselves. Writes that the password does not meet the requirements, etc. Naturally, the password policy is set normally, strong passwords are disabled. What, rsop.msc and shows accordingly. In the AD snap-in, the password changes remarkably.
I noticed that the user can successfully change the password once, after that, here is such a canoe.
Who faced?