Version Information
Release Notes, Update information, Certifications and Frequently Asked Questions.
Concepts
Your first step into modern and powerful process visualization.
Deployment
Topics, you need to know, before using WinCC OA.
- Hardware and software requirements for WinCC OA
  This section contains the current hardware and software requirements for various WinCC OA application scenarios. Recommendations are given for practical deployment of WinCC OA depending on the specific application and scale of the project.
- WinCC OA Licensing
  overview of the licensing model used by WinCC OA
- Installation
  How to properly install WinCC OA.
- Docker Support
  An introduction on how to use WinCC OA within a Docker container, what specifics must be considered as well as where to find more extensive information on the topic.
- vSphere HA Cluster Basics
  vSphere is a virtualization environment that allows users to create clusters consisting of multiple hosts.
- WinCC OA Product Packaging
  Explains the file structure presented in the configuration bundles as well as some use cases with detailed descriptions
Security
Go beyond the norm in cybersecurity.
Engineering
Powerful tools for easy or complex engineering tasks.
Data Management
Classify, structure and archive your data.
Business Logic / Control
Endless possibilities in data processing for your projects.
Data Visualization
User interfaces, Trends and Reports for every purpose and device.
Southbound Interfaces
The process connection to the actual machines/sensors.
Northbound Interfaces
Your portal to the cloud or supervising systems.
Web Connectivity / Network Interfaces
Data exchange, APIs and web technologies
User Management
All about authorization, authentication and login-customization.
Availability
How to get your system uptime to the maximum.
Reporting
Create state of the art project reports without limits.
Addons
Useful tools and enhancements for special demands.
Reference Tables
Detailed and extensive content for special project adaptation.
Videos & Tutorials
Explore the capabilities of WinCC OA with our carefully selected collection of video tutorials and guides.
WinCC OA Documentation
Basic information about terms and functions within the documentation.
Disclaimer
A brief clarification of liability exclusions or legal notices.

Update Installation\Uninstall

If a WinCC OA version is already installed and you try to install a version, a window for upgrade is opened "Upgrade your installation of WinCC OA 3.20"

You can also modify, repair or remove the version via the Control panel > All Control Panel Items > Programs and Features:

Select the option Change , either via right-click-menu on the WinCC OA 3.20 symbol or marking the symbol with a left-click and selecting Change in the menu options above.

You can select the following options in the WinCC OA dialog:

Repair - Repairs the installed program, for example, corrupt files, registry entries. This option is an MSI feature.
Modify - allows you to install additional features or to uninstall already installed features. Features that are already installed are preselected. If you deselect a preselected feature, it is uninstalled.
Remove - Removes WinCC OA from your computer (see also Uninstall).

Troubleshooting: Under certain circumstances, the MSI uninstall routine might not remove WinCC OA correctly from the system. Since a newer installation is already installed, former versions cannot be installed. In this case use the Windows Installer CleanUp Utility to remove the old installation.