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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.

Subject Replies / Views Last Post
Using Python with Quick OPC
Category: General Issues, Building
Topic started 30 May 2023 14:33, by jnickles
Last Post 20 Feb 2024 17:45
by support
Replies:12
Views:1589
Last Post by support
20 Feb 2024 17:45
ReadMultipleItems
Category: General Issues, Building
Topic started 20 Feb 2021 01:28, by Sakai
Last Post 20 Feb 2024 17:44
by support
Replies:7
Views:1202
Last Post by support
20 Feb 2024 17:44
Potential Memory Leak? (Python)
Category: General Issues, Building
Topic started 22 Nov 2017 15:41, by support
Last Post 20 Feb 2024 17:39
by support
Replies:5
Views:4898
Last Post by support
20 Feb 2024 17:39
OPC COM communicaton [Python, win32com]
Category: General Issues, Building
Topic started 08 May 2014 06:17, by support
Last Post 20 Feb 2024 17:38
by support
Replies:7
Views:11k
Last Post by support
20 Feb 2024 17:38
Python code (error 'invalid class string')
Category: General Issues, Building
Topic started 29 Nov 2016 17:35, by support
Last Post 21 Nov 2023 13:41
by support
Replies:2
Views:6105
Last Post by support
21 Nov 2023 13:41
Using QuickOPC with Vee Pro (Keysight/Agilent/Hewlett-Packard)
Category: General Issues, Building
Topic started 14 Jan 2015 16:13, by support
Last Post 26 Oct 2023 07:14
by support
Replies:15
Views:10.3k
Last Post by support
26 Oct 2023 07:14
Unhandled exception in C++ WriteMultipleItemValues
Category: General Issues, Building
Topic started 14 Aug 2023 14:58, by ZParham
Last Post 15 Aug 2023 17:25
by ZParham
Replies:4
Views:478
Last Post by ZParham
15 Aug 2023 17:25
System.Security.Cryptography.CryptographicException (container not found)
Category: General Issues, Building
Topic started 27 Feb 2023 22:25, by jdillon@softwaretoolbox.com
Last Post 05 Mar 2023 10:35
by support
Replies:13
Views:1670
Last Post by support
05 Mar 2023 10:35
Compile with multiple libraries
Category: General Issues, Building
Topic started 24 Nov 2022 07:47, by federica
Last Post 24 Nov 2022 15:58
by federica
Replies:2
Views:652
Last Post by federica
24 Nov 2022 15:58
Cannot open source file stdafx.h when targetting x86
Category: General Issues, Building
Topic started 02 Sep 2022 20:35, by ZParham
Last Post 06 Sep 2022 11:57
by ZParham
Replies:2
Views:882
Last Post by ZParham
06 Sep 2022 11:57
Subscriptions
Category: General Issues, Building
Topic started 28 Jun 2022 09:47, by spicerno
Last Post 03 Jul 2022 17:25
by support
Replies:5
Views:864
Last Post by support
03 Jul 2022 17:25
Is QuickOPC compatible with Delphi v11 (code name Alexandria)
Category: General Issues, Building
Topic started 19 Jan 2022 15:52, by BAUMGARTNER
Last Post 19 Jan 2022 17:32
by support
Replies:1
Views:799
Last Post by support
19 Jan 2022 17:32
PHP COM System cannot found file
Category: General Issues, Building
Topic started 07 Nov 2018 12:32, by igr
Last Post 08 Nov 2018 15:56
by support
Replies:5
Views:2882
Last Post by support
08 Nov 2018 15:56
CPU usage jumps to 100%
Category: General Issues, Building
Topic started 27 Apr 2018 16:01, by MPick
Last Post 02 May 2018 06:04
by support
Replies:9
Views:4817
Last Post by support
02 May 2018 06:04
Cannot Compile mscorlib.tlh (C++, VS 2017)
Category: General Issues, Building
Topic started 04 Dec 2017 19:35, by MPick
Last Post 05 Dec 2017 18:25
by support
Replies:4
Views:16.5k
Last Post by support
05 Dec 2017 18:25
connect the c++ to quickopc
Category: General Issues, Building
Topic started 28 Apr 2017 10:34, by support
Last Post 12 May 2017 17:59
by TONY CHIAM
Replies:21
Views:16.8k
Last Post by TONY CHIAM
12 May 2017 17:59
Memory leak in C++
Category: General Issues, Building
Topic started 14 Feb 2017 11:13, by olab
Last Post 27 Feb 2017 12:23
by support
Replies:3
Views:7001
Last Post by support
27 Feb 2017 12:23
Programmatically changing COM global properties
Category: General Issues, Building
Topic started 10 Feb 2017 09:24, by support
Last Post 10 Feb 2017 09:26
by support
Replies:3
Views:5415
Last Post by support
10 Feb 2017 09:26
Portable C++ Examples
Category: General Issues, Building
Topic started 16 Nov 2016 07:58, by support
Last Post 16 Nov 2016 07:59
by support
Replies:1
Views:5308
Last Post by support
16 Nov 2016 07:59
VB6 Intellisense / Early Binding Problem
Category: General Issues, Building
Topic started 22 Jul 2013 18:04, by jgyenese
Last Post 12 Apr 2016 19:02
by jgyenese
Replies:4
Views:6820
Last Post by jgyenese
12 Apr 2016 19:02
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