LDAP don't authenticate user from different domain

Hi!

i have two AD domains
a.domain.loc
b.domain.loc

I created user group in domain "a.domain.loc" and included user from "b.domain.loc" and user from "a.domain.loc"
This group i specified in parameter "xwiki.authentication.ldap.user_group"
When i am trying to authenticate with user from "a.domain.loc" it works well, but when i am trying to use user from "b.domain.loc" authentication fails.

In debug log i see that only user from "a.domain.loc" included in the specified group.
For user from "b.domain.loc" logs says:
Failed to get group members
Looks like [CN=user,OU=Domain Users,DC=b,DC=domain,DC=loc] is not a DN, lets try filter or id