What is MOST likely misconfigured when users in one office experience problems after merging into one OU?

When users in one office experience issues after merging into one Organizational Unit (OU), the most likely area of misconfiguration is group policies. Group policies are used to manage user settings and permissions centrally within an Active Directory environment. Each OU can have distinct group policies applied to it, which can affect the users and computers within that OU.

If group policies were not properly aligned or configured after the merger, users may find themselves with incorrect settings, such as desktop configurations, security settings, software deployment policies, or login scripts that do not apply as intended. This could lead to various operational problems, such as inability to access certain applications, unexpected system behavior, or restrictions that were not present before the merger.

By contrast, while firewall policies, file permissions, and port permissions are important for maintaining secure and operational environments, they are less likely to be directly impacted by the merger of OUs and would generally affect broader network access rather than user-specific settings within Active Directory. Therefore, the primary consideration in this scenario focuses on the group policies tied to the newly configured OU.