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Hi, I have seen that FreeOOCUA Modeler uses in the background an OPCUA server based on Python. We already  had problems with the Python OPCUA server. Don’t know why. But it this server is not commercial and the Python server has a lot of open issues in Github. With all commercial Opc Ua Servers we testet so far (Unified Automation, Beckhoff, SIEMENS) it worked. Do you really need to use this OPCUA server? If yes and if we can’t get it running we can refund you the money.

Nö sorry - we still don’t know how to compile for Hololens

Hi Alex,

I assume that you followed the troubleshooting steps under https://game4automation.com/documentation/current/opcua.html

It is always hard to say what the reason for the connection problem is. You should always be able to connect to the server with OPCWatch. If not - if you are using a for free server please tell us the name and send us your server configuration and we will try to reproduce your problems.

I am wondering a little bit about the /... behind the server address ....4840. Can you try without the / and everything behind?

The client is not able to connect to the Server. Please turn firewalls and virus protection off. 

It could be also a security setting in the OPCUA server.

Is the opcua demo server running from Unified Automation working on your PC (https://www.unified-automation.com/downloads/opc-ua-servers.html)?

If yes could you please tell us a setup (server and server config) where we can check your problem?

Please also take care to use version 1.022 (it is in your download folder) - on the asset store it is currently under review and should be available today - there was a bug with the new drive handles in version 1.021.

The post-processing stack is available via the package manager:

Please consider the hints concerning assembly definitions after installing the post processing stack:


You need to move the source (can) upwards so that it sits on top of the conveyor.