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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.

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Subject Replies / Views Last Post
DeltaV browsing issue
Category: Connections, Reconnections, COM/DCOM
Topic started 23 Jan 2018 14:22, by support
Last Post 05 Dec 2021 11:12
by micham
Replies:21
Views:12.9k
Last Post by micham
05 Dec 2021 11:12
can't connect unless Opc Test Client is run
Category: Connections, Reconnections, COM/DCOM
Topic started 29 Jul 2021 17:09, by observer
Last Post 27 Nov 2021 19:06
by support
Replies:9
Views:2077
Last Post by support
27 Nov 2021 19:06
OPC DA ReadMultipleItemValues remote support?
Category: Connections, Reconnections, COM/DCOM
Topic started 11 Nov 2021 08:05, by yong
Last Post 11 Nov 2021 08:43
by support
Replies:1
Views:813
Last Post by support
11 Nov 2021 08:43
Connecting with a remote OPC UA Server (KepServer) - No connection could be mad
Category: Connections, Reconnections, COM/DCOM
Topic started 06 Jul 2021 13:01, by micham
Last Post 06 Jul 2021 14:37
by support
Replies:1
Views:4292
Last Post by support
06 Jul 2021 14:37
After lost the OPC UA Server connection?
Category: Connections, Reconnections, COM/DCOM
Topic started 11 Feb 2021 13:31, by martinx1
Last Post 11 Feb 2021 19:42
by support
Replies:3
Views:1226
Last Post by support
11 Feb 2021 19:42
Access Denied on DASSIDirect
Category: Connections, Reconnections, COM/DCOM
Topic started 20 Mar 2020 09:18, by csm
Last Post 28 Dec 2020 06:57
by support
Replies:23
Views:5885
Last Post by support
28 Dec 2020 06:57
RPC Server Unavailable in simple DA client
Category: Connections, Reconnections, COM/DCOM
Topic started 17 Dec 2020 16:43, by janderscu
Last Post 22 Dec 2020 07:11
by support
Replies:4
Views:1989
Last Post by support
22 Dec 2020 07:11
Is the "http://opcua.demo-this.com:51211/UA/SampleServer" OPC UA server local?
Category: Connections, Reconnections, COM/DCOM
Topic started 24 Nov 2020 17:29, by micham
Last Post 24 Nov 2020 18:42
by support
Replies:1
Views:1170
Last Post by support
24 Nov 2020 18:42
connexion to a opc server GUI with windows service
Category: Connections, Reconnections, COM/DCOM
Topic started 09 Nov 2020 15:32, by PhilippeG
Last Post 13 Nov 2020 09:03
by support
Replies:5
Views:1332
Last Post by support
13 Nov 2020 09:03
FactoryTalk Linx Gateway 6.11 COM Errors
Category: Connections, Reconnections, COM/DCOM
Topic started 24 Aug 2020 19:00, by jessebrown
Last Post 16 Oct 2020 07:08
by support
Replies:29
Views:9933
Last Post by support
16 Oct 2020 07:08
Sync read and hold periods in PowerBuilder Application
Category: Connections, Reconnections, COM/DCOM
Topic started 29 Sep 2020 15:54, by spaxman
Last Post 05 Oct 2020 14:51
by support
Replies:9
Views:1295
Last Post by support
05 Oct 2020 14:51
Connecting to many OPC-servers using multiple threads gives Timeouts
Category: Connections, Reconnections, COM/DCOM
Topic started 02 Sep 2020 07:58, by zaglerp
Last Post 24 Sep 2020 15:26
by support
Replies:12
Views:3610
Last Post by support
24 Sep 2020 15:26
EasyDAClient CallbackQueue Questions
Category: Connections, Reconnections, COM/DCOM
Topic started 14 Jul 2020 14:25, by Holbach
Last Post 15 Jul 2020 16:14
by support
Replies:3
Views:1238
Last Post by support
15 Jul 2020 16:14
SSL/TLS error calling OPC XML DA server with QuickOpc
Category: Connections, Reconnections, COM/DCOM
Topic started 30 Jun 2020 14:24, by georgeslegros
Last Post 01 Jul 2020 09:12
by support
Replies:3
Views:1855
Last Post by support
01 Jul 2020 09:12
Tags subscription while server still in OPC_STATUS_NOCONFIG state
Category: Connections, Reconnections, COM/DCOM
Topic started 10 Mar 2020 16:10, by Cavallari
Last Post 11 Mar 2020 14:11
by support
Replies:5
Views:1795
Last Post by support
11 Mar 2020 14:11
Memory leak issue cause by OpcLabs.QuickOpc
Category: Connections, Reconnections, COM/DCOM
Topic started 09 Jan 2020 11:42, by KrisSik
Last Post 09 Jan 2020 17:54
by support
Replies:1
Views:1538
Last Post by support
09 Jan 2020 17:54
Error "Server failed", no reconnection
Category: Connections, Reconnections, COM/DCOM
Topic started 07 Feb 2014 09:21, by support
Last Post 17 Sep 2019 10:09
by support
Replies:15
Views:9706
Last Post by support
17 Sep 2019 10:09
OPC XML-DA. Communication problem
Category: Connections, Reconnections, COM/DCOM
Topic started 23 Aug 2019 11:58, by Andriy
Last Post 03 Sep 2019 05:59
by support
Replies:16
Views:4996
Last Post by support
03 Sep 2019 05:59
Hold Periods. Server Detach meaning
Category: Connections, Reconnections, COM/DCOM
Topic started 08 Aug 2019 12:29, by Andriy
Last Post 14 Aug 2019 09:53
by support
Replies:4
Views:1515
Last Post by support
14 Aug 2019 09:53
Random Disconnect from OPC server
Category: Connections, Reconnections, COM/DCOM
Topic started 02 Mar 2019 22:48, by Olya
Last Post 08 Apr 2019 15:53
by Olya
Replies:12
Views:4745
Last Post by Olya
08 Apr 2019 15:53
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