PTC Arbortext Content Delivery Upgrade > Updating PTC Arbortext Content Delivery to a New Release > Pre-Update Actions
Pre-Update Actions
Before you update a PTC Arbortext Content Delivery release, you must perform the following tasks on the machine running the old PTC Arbortext Content Delivery release that has content loaded, such as product hierarchy, information structures, and so on.
Stopping Servers
1. Stop Core server
2. Stop Core CMI servers
3. Stop JBoss Wildfly server
4. Stop the Windchill Directory Server.
5. Take backup of the existing PTC Arbortext Content Delivery installation folder on both the Publisher and Viewers.
6. If you have any previous customizations that you want to add to the updated release, see the Analyzing 6.4 Customization section.