Hello
After i create a new domain user account in the AD , i define a temp password and check the flag user must change password in next login , and when i go to windows 8.1 it accepts fine the tmp password, and asks to input a new password ,after putting the password allowd by the group policy requirements it says : The users password must be changed before signing in , it works fine with previous versions of windows , this issue started when we started to add windows 8 and windows 8.1 clients for tests , the only workarround we could see is not to put the flag users must change their password next login , they had to come to an admins computer and add their password directly into AD.