# OPC Com Module Error, COM object method returns error code: 0x8007007E

**URL:** <https://forum.inductiveautomation.com/t/opc-com-module-error-com-object-method-returns-error-code-0x8007007e/61380>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [June 30, 2022, 4:22am UTC](https://forum.inductiveautomation.com/t/opc-com-module-error-com-object-method-returns-error-code-0x8007007e/61380 "2022-06-30T04:22:13Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Sergey\_Korehskov](https://avatars.discourse-cdn.com/v4/letter/s/958977/32.png) [@Sergey\_Korehskov](https://forum.inductiveautomation.com/u/Sergey_Korehskov)\
**Post date:** [June 30, 2022, 4:22am UTC](https://forum.inductiveautomation.com/t/opc-com-module-error-com-object-method-returns-error-code-0x8007007e/61380/1 "2022-06-30T04:22:14Z")

</div>

Hello Forum,

I’m trying to connect Ignition to Citect SCADA via OPC COM module. Both installed on the same server, so no DCOM.  
Citect expose 2 Opc servers, for Alarms and DataTags.  
OPC Connection setup goes smothly in Ignition, (I can select an OPC Server Name). But connection is failing with a following error:

```auto
com.jniwrapper.win32.com.ComException: COM object method returns error code: 0x8007007E; The specified module could not be found.
	at com.jniwrapper.win32.com.ComException.checkResult(SourceFile:172)
	at com.jniwrapper.win32.com.ComFunctions.coCreateInstanceEx(SourceFile:230)
	at com.inductiveautomation.opccom.COMServerImpl$ConnectServerJob.internalRun(COMServerImpl.java:715)
	at com.inductiveautomation.opccom.wrapper.OleJob.run(OleJob.java:48)
	at com.jniwrapper.win32.MessageLoopThread$ThreadSynchronizedAction.run(MessageLoopThread.java:620)
	at com.jniwrapper.win32.MessageLoopThread$LoopThread.run(MessageLoopThread.java:562)

8.1.18 (b2022061518)
Azul Systems, Inc. 11.0.15

```

To test the connectivy I also used **Kepware QuickClient and it worked succsessfully**.  
Both Ignition and Citect run under Local System account.

Windows 2016 Std, Ignition 8.10.18.

Any ideas how to resolve or debug the problem further are appreciated.

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<div class="post-metadata">

**Author:** ![plo](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/plo/32/33875_2.png) [@plo](https://forum.inductiveautomation.com/u/plo)\
**Post date:** [July 7, 2022, 8:55pm UTC](https://forum.inductiveautomation.com/t/opc-com-module-error-com-object-method-returns-error-code-0x8007007e/61380/2 "2022-07-07T20:55:38Z")

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Hello Sergey,

I would recommend going through the troubleshooting doc for OPC COM here - [https://support.inductiveautomation.com/hc/en-us/articles/360047134152-Setting-up-and-troubleshooting-OPC-COM-connections](https://support.inductiveautomation.com/hc/en-us/articles/360047134152-Setting-up-and-troubleshooting-OPC-COM-connections)

Do you have the OPC Core Components installed locally on the Ignition Gateway? Is that logged error from the Gateway?