735 ILCS 5/3-102
This Article III shall apply to and govern every action to review judicially a final decision of any administrative agency where the Act creating or conferring power on such agency, by express reference, adopts the provisions of this Article III or its predecessor, the Administrative Review Act. This Article shall be known as the "Administrative Review Law". In all such cases, any other statutory, equitable or common law mode of review of decisions of administrative agencies heretofore available shall not hereafter be employed.
Unless review is sought of an administrative decision within the time and in the manner herein provided, the parties to the proceeding before the administrative agency shall be barred from obtaining judicial review of such administrative decision. In an action to review any final decision of any administrative agency brought under this Article III, if a judgment is reversed or entered against the plaintiff, or the action is voluntarily dismissed by the plaintiff, or the action is dismissed for want of prosecution, or the action is dismissed by a United States District Court for lack of jurisdiction, neither the plaintiff nor his or her heirs, executors, or administrators may commence a new action within one year or within the remaining period of limitation, whichever is greater. All proceedings in the court for revision of such final decision shall terminate upon the date of the entry of any Order under either Section 2-1009 or Section 13-217. Such Order shall cause the final administrative decision of any administrative agency to become immediately enforceable. If under the terms of the Act governing the procedure before an administrative agency an administrative decision has become final because of the failure to file any document in the nature of objections, protests, petition for hearing or application for administrative review within the time allowed by such Act, such decision shall not be subject to judicial review hereunder excepting only for the purpose of questioning the jurisdiction of the administrative agency over the person or subject matter.
735 ILCS 5/3-102