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Unable to start a DCOM Server

Anonymous
2025-05-21T10:22:10+00:00

Whenever I try to connect to an OMRON PLC via USB I get the following error appear in Event Viewer and I'm unable to connect to my PLC. I have two other devices that can connect without issue. I've tried completely removing and reinstalling the OMRON software so it doesn't seem to be that at fault.

Log Name: System
Source: Microsoft-Windows-DistributedCOM
Date: 21/05/2025 11:17:23
Event ID: 10000
Task Category: None
Level: Error
Keywords: Classic
Description:
Unable to start a DCOM Server: {F6299854-3771-46F4-AAD6-B1CD80E0751D}. The error:
"2147943140"
Happened while starting this command:
"C:\PROGRA~2\OMRON\CX-SER~1\CXSDI_~1.EXE" -Embedding
Event Xml:
10000
0
2
0
0
0x8080000000000000
22666
System 

"C:\PROGRA~2\OMRON\CX-SER~1\CXSDI\_~1.EXE" -Embedding  
2147943140  
{F6299854-3771-46F4-AAD6-B1CD80E0751D}
Windows for home | Windows 11 | Devices and drivers

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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  1. Anonymous
    2025-05-23T15:42:40+00:00

    Hello,

    Thanks for posting to Microsoft Community!

    According to the description, there is an issue with the DCOM server when trying to connect to your OMRON PLC via USB. To resolve this issue, you can try the following steps:

    • Run the Component Services tool by pressing Windows key + R, typing "dcomcnfg" and pressing Enter.
    • In the Component Services window, expand "Component Services" > "Computers" > "My Computer" > "DCOM Config."
    • Locate the DCOM Server mentioned in the error message: {F6299854-3771-46F4-AAD6-B1CD80E0751D}.
    • Right-click on the DCOM Server, go to Properties, and navigate to the Security tab.
    • Under "Launch and Activation Permissions," click Edit Limits and ensure that the necessary permissions are granted.
    • Restart your computer after making these changes and try connecting to your OMRON PLC again.

    If the issue persists, you may need to contact OMRON support for further assistance as it could be related to their specific software or drivers.

    When everything is resolved, feel free to mark this thread as answer and helpful. Otherwise, please let me know if there's anything else I can help you with.

    Best Regards, Van Johnson | Microsoft Community Moderator

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