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2022 Microsoft Windows DCOM Security Update - Effect on OPC Classic Clients?

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19 Jun 2022 19:54 #10996 by support
Hi.

There should be no need to property changes on the objects you listed, but there may be global changes (at the beginning of the program) needed.
I have made the answer into a "Q&A" : kb.opclabs.com/COM_management#Q.26A

- look for and expand
"How do I migrate my VB.NET Windows Forms application to QuickOPC 2022.1 or later, and how can it be made to deal with CVE-2021-26414?"

Best regards

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19 Jun 2022 17:50 #10995 by micham
Hi,

Yes. VB.NET

Thank you.

Michael

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19 Jun 2022 15:19 #10994 by support
Hello.

Do I recall correctly that you have a Visual Basic.NET application?

Regards

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18 Jun 2022 05:25 #10992 by micham
Hi,

Thank you for your answer. We are using the following objects in our project:

OpcComputerAndServerDialog
DAitemDialog
EasyDAClient

Do we need to change any properties of the above objects to support the hardening changes for CVE-2021-26414 vulnerability?
Or, is it enough to use version 2022.1?

Thank you.

Michael

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18 Jun 2022 04:44 #10991 by support
Hi,
Yes, there may be an effect. It has been addressed in QuickOPC 2021.1.

- kb.opclabs.com/What%27s_new_in_QuickOPC_2022.1
- kb.opclabs.com/COM_management

Best regards

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18 Jun 2022 03:40 #10990 by micham
Hi,
Will this Microsoft update has any effect on Quick OPC? Does Quick OPC uses CoInitializeSecurity?

See the attached document.

Thank you.

Michael
Attachments:

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