Siemens SIMATIC HMI Series System Manual page 23

Adapting security policies
The operating system must permit the installation of unsigned drivers and files. Detailed
information is available in the section "Adapting Security Policies under Windows".
Note
An update of the operating system is not permitted if WinCC is started. Start the computer
again after updating the operating system.
Checking the "Path" environment variable
Before starting WinCC, you should check the entries in the "Path" environment variable.
A few programs insert paths containing quotation marks in the environment variable. These
paths can prevent WinCC from starting or limit its functionality. The paths with quotation marks
can also interfere with the software of other manufacturers.
Open the "System properties" dialog in the Control Panel. Open the "Environment variables"
dialog using the "Environment variables" button on the "Advanced" tab, and display the value
of the "Path" system tag.
If the "Path" system tag contains paths with quotation marks, reorder the entries so that these
paths are called last.
Requirements for the OPC UA WinCC channel
The WinCC OPC UA Configurator requires the Java Runtime Environment.
Java Runtime be installed prior to the installation of WinCC V7.4.
To be able to work with the WinCC OPC UA Configurator , you need to download and install
the latest JRE installation package. You can find the installation package on the Oracle
homepage under:
● Link to Oracle download homepage
downloads/jre8-downloads-2133155.html)
Install the latest release of the variant suitable for your operating system in the 32-bit version,
at least JRE 8.
You can find additional information about the WinCC OPC UA Configurator in the WinCC
Information System under "Communication > OPC UA WinCC Channel > WinCC OPC UA
Configurator".
You can find additional information on installation in the Product Support under entry number
= "109482513"
● Internet: OPC UA WinCC Channel - FAQ
view/en/109482513)
WinCC: General information and installation
System Manual, 02/2017, A5E40840020-AA
(http://www.oracle.com/technetwork/java/javase/
(http://support.automation.siemens.com/WW/
WinCC Installation Notes
1.6 Installation Requirements
23