Ole error 80131534

Hello.
(Note: I preferred to run the «full» installer but select the custom / production install only, for start; you did the «Full installation which is a larger gun).

Anyway, I hoped to find some hidden problem in the first installer log (Production), or a difference from the second run. But unfortunately, I have not found it.
So unless if we find conditions under which this can be reproduced, I do not think I can progress further. I am glad it works now.

Best regards

After uninstalling QuickOPC Production and installing QuickOPC again from QuickOPC-2021.2-Windows-Full.exe with installation type ‘Full installation’ our driver works again!! Attached both log files (#1: Installation of QuickOPC Production from within our INNO Setup -> OLE errors as mentioned, #2: Installation of QuickOPC Full -> No more errors).

Hello,
thank you for all the additional details.

It almost looks like that something went wrong during the installation of the QuickOPC components, although there were no errors.
We could try to troubleshoot further, but before that, can you simply try to reinstall QuickOPC (same version) — and, I would recommend doing so using the «full» installation package (but possibly selecting just the production installation).

And, just in case there is something suspicious in it, please try to collect the setup logs — both from your original setup, and from this new one: opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User%2…bleshooting%20the%20Setup.html .

Best regards

2. Update:
Pressing the ‘Read’, ‘Write’ or ‘Subscribe’ button results in an OLE error (see attachment).

Update:
I compiled the EasyOpcUADemo program for Object Pascal delivered with your setup and started it on the problematical PC. When trying to browse the servers or variables the attached error messages appear.

Hello,

thank you for your fast response! To answer your questions:

1. The EasyUAClientConfiguration is the first object used in our driver, so I can’t say if other objects used later would cause the same error (but I think so). If it would be helpful I could write a short test program to clarify this.

2. Our driver including QuickOPC was re-installed on the same PC without uninstalling the previous installation before. We are installing QuickOPC from within our INNO Setup with

[Run]
Filename: «{app}QuickOPC-2021.2-Windows-Production.exe»; Parameters: «/VERYSILENT /TYPE=productioncom /LicenseFile=QuickOPCLicense.bin»;

3. Absolutely sure (see attached screenshot). Version 2021.2 is the version we bought a license for, I never used a newer version.

Best regards

Hello,

I have some questions.

1. Do you know if other QuickOPC UA-related objects can be created, or is this the only one that has problems?
2. When you say «re-installed», do you mean that it was reinstalled on the same computer where it has worked before, or do you mean an installation on a new computer?
3. Also, are you sure that what you have installed

as last

was really version 2021.2, and not a different (newer) version?
The reason I am asking is because 2021.2 was the last version in which this object was called EasyUAClientConfiguration; in nwer versions it is EasyUAClientManagement.

Best regards

Our driver based on QuickOPC 2021.2 worked well until the driver (including QuickOPC 2021.2 Production) was re-installed. Now an OLE Error 80131534 including the class ID for CLASS_EasyUAClientConfiguration appears if a TEasyUAClientConfiguration object is created under Delphi 10.4 and Windows 10 (see attached screenshot). I checked the Windows registry for missing class specifications but everything seems to be o.k.