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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
Replied by support on topic 2022 Microsoft Windows DCOM Security Update - Effect on OPC Classic Clients?
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
Replied by micham on topic 2022 Microsoft Windows DCOM Security Update - Effect on OPC Classic Clients?
Hi,

Yes. VB.NET

Thank you.

Michael

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19 Jun 2022 15:19 #10994 by support
Replied by support on topic 2022 Microsoft Windows DCOM Security Update - Effect on OPC Classic Clients?
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
Replied by micham on topic 2022 Microsoft Windows DCOM Security Update - Effect on OPC Classic Clients?
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
Replied by support on topic 2022 Microsoft Windows DCOM Security Update - Effect on OPC Classic Clients?
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
2022 Microsoft Windows DCOM Security Update - Effect on OPC Classic Clients? was created 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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