Release 8.1.0.0 > Release Requirements and Support > System and Software Requirements for Arbortext Publishing Engine
  
System and Software Requirements for Arbortext Publishing Engine
System Requirements
The Arbortext Publishing Engine 64-bit installation requires approximately 1.74 GB of disk space.
Minimum requirements for the operating system and web server application where you will install Arbortext Publishing Engine apply, as it runs within a servlet container or web application server on these systems. However, your site's implementation will likely require more than the minimum requirements. Considerations based on the site's production environment have an impact on optimizing your system, including additional disk space, memory, number of server CPU processors, amount of RAM, throughput and output, number of requests, number and size of documents, number and size of graphics, and other network traffic.
This Arbortext Publishing Engine release is compatible with clients running Arbortext Editor release 7.1 F000 and later. Some Arbortext Editor exceptions or limitations may apply regarding backward compatibility.
Platform Support
For a complete list of supported platforms, including post-release updates, refer to support.ptc.com. PTC only provides product support for Arbortext Publishing Engine used on hardware or operating systems described here.
See these sections:
• Product Platforms
• Arbortext Publishing Engine Web Server and Servlet Container Compatibility
Please take these points into consideration when configuring your environment:
• Tomcat Support
You can implement the Arbortext Publishing Engine with Tomcat alone. Tomcat has the ability to handle HTTP requests sent directly to it.
* 
You must ensure that Tomcat is configured in line with current security best practices.
• SOAP Support
SOAP support is implemented using the Apache Axis2 software. WSDL supports Axis2. See the SOAP support instructions for your servlet application.
* 
There are potential security issues with SOAP and the Axis2 libraries. The SOAP support is deprecated and will be removed in a future release. For more information, see Arbortext Publishing Engine Security Framework.
Windows Updates
Arbortext Publishing Engine requires and installs the Microsoft Visual C++ 2019 redistributable. Operating systems must be updated to support the distributable before attempting to install Arbortext Publishing Engine:
Platform
Required Update
Windows Server 2016
None
Windows Server 2012 R2
Windows 8.1 Update for x64-based Systems (KB2919442) – install this before attempting to install KB2919355
Windows 8.1 Update for x64-based Systems (KB2919355)
Browser Support
Browser support is listed in the software compatibility matrix for this release. Refer to support.ptc.com.
See the section Browser Platform Compatibility for PTC Arbortext products.
The web browser support applies to the web clients of Arbortext Publishing Engine and to launch the Arbortext Publishing Engine administrative web page, using a URL like the following:
http://server:port/e3/
Internet Protocol Version 6 Support
Arbortext Publishing Engine supports Internet Protocol Version 6 (IPv6).
* 
If Arbortext Editor fails to connect to Arbortext Publishing Engine, it’s possible that Arbortext Editor is running on a different type of network than Arbortext Publishing Engine. Both Arbortext Editor and Arbortext Publishing Engine support IPv4 and IPv6, but they must both be running on the same type of network to avoid an error. Check with your system administrator to resolve networking issues.