The answer will depend on the written security policy of the individual court. Police officers and other law enforcement officers are advised to check with the specific court prior to attempting to conceal carry.
Michigan law provides that any person with a CPL may carry anywhere in the State of Michigan unless otherwise precluded. Most of the areas that are prohibited carry zones are set forth in Michigan Compiled Laws sec. 28.425o. Subsection 5 of this law sets forth the people who are exempt from these restrictions and who may therefore otherwise carry in weapons free zones. Provided certain licensing requirements are met, exempted persons include the following:
A retired police officer, retired law enforcement officer, or retired federal law enforcement officer, a private investigator or private detective, a corrections officer, a motor carrier officer or capitol security officer, a member of a sheriff’s posse, a parole, probation, or corrections officer, a state court judge, a court officer, a peace officer.