Install, License, and Configure ThingWorx Navigate > Install ThingWorx Navigate (Recommended) > Apply a PTC Windchill Patch
  
Apply a PTC Windchill Patch
If you haven’t already applied a PTC Windchill Patch as stated in the “Windchill prerequisites” section of the Configure ThingWorx Navigate topic, follow these steps:
For ThingWorx Navigate 8.5.3 and Windchill 11.1 M020—Download the PTC Windchill Extension 1.12.4 bundle from the PTC Software Download page and install the respective Windchill patch of 11.1 M020.
For all other versions of ThingWorx Navigate—Install the patch from <installation_directory>\ThingWorxNavigate-<version>\NavigateApp\WindchillPatch.
The required PTC Windchill patch adds several web service endpoints that allow ThingWorx to interact with Windchill.
To download Windchill patches, refer to the Install a PTC Windchill Patch topic.