Upgrading to Windows 10|Classic OPC: DA, A&E, HDA, XML-DA, etc.|Forum|OPC Foundation

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Upgrading to Windows 10
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Dennis Hogle
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03/08/2017
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12/06/2018 - 09:06
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I have been asked to upgrade my system from Windows 7 to Windows 10.  The code was originally written for Windows NT 4.0 (it’s very old).  When I try to register the opc dlls (opc_aeps, opcbc_ps, opccomn_ps, opchda_ps, opcproxy,opcSec_ps, opcauto & opcdaauto) using regsvr32, I get an error saying the dll failed to load.  Is there a newer version of the dlls that is Windows 10 compatible?  Does anyone have a suggestion (besides rewriting the code) on what I should do to resolve this?

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Randy Armstrong
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05/30/2017
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12/06/2018 - 13:28
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The DLLs probably need CRT libraries which are not installed by default on Windows 10.

I suggest you use the Core Components installer:
https://opcfoundation.org/deve…..omponents/

It will install all of those DLLs properly.

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