Installation and Upgrade > Installation and Configuration Guide - Update Existing Installation > Updating an Existing Installation > Post-Update Actions > Applying Maintenance Release Special Instructions
  
Applying Maintenance Release Special Instructions
See the Windchill Maintenance Read This First for any additional instructions applicable for the maintenance release to which you are updating. You can download the latest Windchill Maintenance Read This First for your maintenance release at the following location on the PTC Web site: http://www.ptc.com/appserver/cs/doc/refdoc.jsp
This URL directs you to the PTC Online Support Web page for reference documents. For your document search criteria, select your product from the Product drop-down list, select the current release from the Release drop-down list, select Read This First from the Document Type drop-down list, and select Administrator from the User Role drop-down list.