We have been able to identify at least one possible cause of this issue, and suggest a solution. Please see: kb.opclabs.com/Error_%22The_specified_network_password_is_not_correct.%22 .

The error you are getting is not related to the fact your are running the trial version. But is is a bit of mystery. It probably has to do with accessing the client application certificate that QuickOPC creates automatically for OPC UA communications.

I can only guess that things got somehow mixed in the certificate stores (not your fault). Can you please do the steps described further below.

1. Download, install and run (with elevated privileges) the UA Configuration Tool, from www.opclabs.com/products/ua-configuration-tool .
2. Switch to the Manage Certificates tab.
3. Verify that you have ".... UA Appplications" in the Store Path field.
4. Press View Certificates.
5. Locate any certificate that look "yours". Their name will be based on the name of the VB6 IDE executable, or the name of your own/demo executable. Select each such certificate, right-click on it, select Delete, and confirm. If you do not have other UA apps on your computer to be concerned about, you can delete all certificate that you see. When done, press OK.
6. click on the drop-down next to "Store Path", and select "... Machine Default".
7. Repeat steps 4 and 5 on the Machine Default store.
8. Close the UA Configuration Tool.

Then, try to run your (or the demo) app again. Make sure you run VB6 and your app - at least the first time - with elevated (admin) privileges. They are usually needed to store new certs into the certificate stores.

Best regards

I will send you all this information to the email address you used to register with the forums.

Best regards

Hello.

If you wanted to pay by invoice/bank transfer: When you switch the Purchase page to that mode, the checkbox for "Version upgrade" will appear.
If you wanted to buy online (credit card and other options - web shop handled by the Digital River platform): Let me know, and I will email you a discount coupon. You would then proceed as with purchasing a new license, and apply the coupon code during the process.

Best regards

I found out you cannot actually do that with version 5.31.
The COM (and therefore, VB6) support for OPC UA has been added in version 5.32, as listed here: kb.opclabs.com/Versions and
here: kb.opclabs.com/What%E2%80%99s_New_in_QuickOPC_5.32 .

Version 5.31 supports OPC UA but only in .NET.

In 5.32 and newer versions, your question is then answered in the user's guide under the article "Referencing the Components (QuickOPC-COM)".

As this is an old version, we do not oficially support it.
But the error seems to be related to a supplementary package that you do not need at all.

Try to run the install once again, select the custom install, and during the process, uncheck the parts you do not need - and specifically, anything that has to do with the UA<->COM wrapper/proxies.

Regards