Active Roles Server failed to add or remove members from a certain Dynamic Group.
The following error may be seen in the event logs:
ArError2523_2 Error when updating Dynamic Group. Failed to add or remove members from a certain dynamic group.
Most likely cause:
The domain controller rejected the request to add or remove objects from the group identified by the Dynamic Group field in the event description. A symptom of this condition is the The directory is busy or The server is not operational error message in the Details field of the event description.
The following options may correct the issue:
Update the membership of the dynamic group by right clicking the Dynamic Group and selecting Properties | Member of tab | Select the Rebuild button in the Active Roles console.
The second option is to force the Dynamic Group updater to review for membership changes by using the Active Roles console to execute the Dynamic Group Updater task located in the Configuration | Server Configuration | Scheduled Tasks | Builtin container.