Online Forums

Technical support is provided through Support Forums below. Anybody can view them; you need to Register/Login to our site (see links in upper right corner) in order to Post questions. You do not have to be a licensed user of our product.

Please read Rules for forum posts before reporting your issue or asking a question. OPC Labs team is actively monitoring the forums, and replies as soon as possible. Various technical information can also be found in our Knowledge Base. For your convenience, we have also assembled a Frequently Asked Questions page.

Do not use the Contact page for technical issues.

Program termination ('DynamicShellcode') under SOPHOS cloud-based virus scanner

Start
Prev
1
Next
End

1

support
Offline
Moderator

More

17 May 2022 12:02 #10869 by support

Replied by support on topic Program termination ('DynamicShellcode') under SOPHOS cloud-based virus scanner

Thank you very much, this is useful to know, also for others.
It may have to do with us calling the UA certificate generator as a separate executable/process.

If so, other notes/remedies to this might be:
1) When targeting .NET Core/.NET 5+, the certificate generation is done differently, inside the .NET code, so the external program is not invoked.
2) It is possible to pre-generate the certificate manually (outside of your QuickOPC application), and let the application just find it and use it. There is information in User's Guide that helps with this.
3) It is likely that QuickOPC 2022.2 or some other coming version will switch to the approach use by .NET Core/.NET 5+ currently also in .NET Framework targeting.

Best regards

Please Log in or Create an account to join the conversation.

jkahlert
Topic Author
Offline
Elite Member

More

16 May 2022 14:28 #10868 by jkahlert

Replied by jkahlert on topic Program termination ('DynamicShellcode') under SOPHOS cloud-based virus scanner

In the meantime we could locate the problem: SOPHOS prevents QuickOPC's try to create the OPC UA certificate! As a workaround we deactivated SOPHOS temporarily and started our application once so that the certificate could be created. After that SOPHOS was activated again. Now our application runs without problems.

The following user(s) said Thank You: support

Please Log in or Create an account to join the conversation.

support
Offline
Moderator

More

11 May 2022 08:43 #10856 by support

Replied by support on topic Program termination ('DynamicShellcode') under SOPHOS cloud-based virus scanner

Yes, quite possibly.

And the same answer.

Best regards

Please Log in or Create an account to join the conversation.

jkahlert
Topic Author
Offline
Elite Member

More

11 May 2022 08:17 #10855 by jkahlert

Replied by jkahlert on topic Program termination ('DynamicShellcode') under SOPHOS cloud-based virus scanner

I created a Config file based on the third code snippet ('complete file'), but without any effect.

I found the following post:

www.opclabs.com/forum/general-issues-building/3304-antivirus...en-starting-apps-with-quickopc

Maybe that's the same problem we have!?

Please Log in or Create an account to join the conversation.

support
Offline
Moderator

More

10 May 2022 12:38 #10851 by support

Replied by support on topic Program termination ('DynamicShellcode') under SOPHOS cloud-based virus scanner

Hello.

You can try the suggestions described here: kb.opclabs.com/How_to_disable_prerequisites_boxing . This disables a 3rd-party library that is doing some system hooks that might look suspicious to security programs.

Best regards

Please Log in or Create an account to join the conversation.

jkahlert
Topic Author
Offline
Elite Member

More

10 May 2022 11:50 #10850 by jkahlert

Program termination ('DynamicShellcode') under SOPHOS cloud-based virus scanner was created by jkahlert

After changing to SOPHOS cloud-based virus scanner our QuickOPC-UA based program is terminated due to 'DynamicShellcode' by SOPHOS when trying to connect to the OPC UA server (see attached screenshot). The program worked without problems before and is still working if the QuickOPC code is deactivated.