References > Creo™ Schematics Installation and Administration Guide > Appendix > License Management Software > PTC License Server
  
PTC License Server
Flexera Software, Inc.’s FlexNet Publisher license management software is integrated with PTC software. For more information, visit www.flexerasoftware.com.
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FlextNet Publisher Version 11.13 is shipped with Creo 4.0. However, Creo 4.0 can use FlexNet Publisher version 10.8.x or later for license simplification.