After security settings were applied, an application will no longer start on a server. However, users are still able to access the server remotely. Which of the following is MOST likely causing the…

Security configuration benchmarks such as CIS Benchmarks or STIG guidelines disable many services as part of attack surface reduction, but an application may depend on one of those services to initialize properly. Because remote access relies on separate services (such as RDP or SSH listeners) that were not disabled, users can still connect to the server while the application itself cannot start due to its missing service dependency.

Port security being tripped would block or restrict network-level traffic, which would also prevent users from accessing the server remotely - contradicting the stated scenario.

Applying security settings does not uninstall applications; if the application were uninstalled the binary would be missing entirely rather than failing to start.

Changing DNS settings affects outbound name resolution, not the local startup sequence of an application running on the server itself.