Comprehensive and Detailed In-Depth Explanation: If a new security policy disrupts an essential application, the best course of action is to request a policy exception while a permanent solution is developed. This allows the application to function while ensuring compliance with company security policies. * B. Reinstall the affected software using local administrative rights for each computer - Incorrect. If the security policy is blocking the application, reinstalling it will not resolve the issue. * C. Remove the new security settings and change administrative accounts - Incorrect. Altering security settings without approval could violate company policies and create security risks. * D. Research and procure a replacement application - Incorrect. While replacing the application may be an option, it is not an immediate solution to restoring functionality. Reference: CompTIA A+ 220-1102, Objective 2.2 - Security Best Practices