# Kepware DCOM

**URL:** <https://forum.inductiveautomation.com/t/kepware-dcom/9087>\
**Category:** Ignition\
**Created:** [September 23, 2014, 11:27am UTC](https://forum.inductiveautomation.com/t/kepware-dcom/9087 "2014-09-23T11:27:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![illank86](https://avatars.discourse-cdn.com/v4/letter/i/c77e96/32.png) [@illank86](https://forum.inductiveautomation.com/u/illank86)\
**Post date:** [September 23, 2014, 11:27am UTC](https://forum.inductiveautomation.com/t/kepware-dcom/9087/1 "2014-09-23T11:27:28Z")

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Dear All,

i try to read tag from Kepware, but still get this error:

[code]6:11:45 PM COMSubscription Error advising subscription callback. DCOM security settings are likely preventing the OPC server from connecting to the client for callbacks.

com.jniwrapper.win32.com.ComException: COM object method returns error code: 0x80040202; CONNECT\_E\_ADVISELIMIT  
at com.jniwrapper.win32.com.impl.IUnknownImpl.invokeStandardVirtualMethod(SourceFile:758)  
at com.jniwrapper.win32.com.impl.IUnknownImpl.invokeStandardVirtualMethod(SourceFile:737)  
at com.jniwrapper.win32.ole.impl.IConnectionPointImpl.advise(SourceFile:93)  
at com.inductiveautomation.opccom.wrapper.subscriptions.DataChangeDispatcher.advise(DataChangeDispatcher.java:86)  
at com.inductiveautomation.opccom.wrapper.subscriptions.COMSubscription.oleloop\_updateGroup(COMSubscription.java:775)  
at com.inductiveautomation.opccom.wrapper.subscriptions.COMSubscription$Connector.internalRun(COMSubscription.java:826)  
at com.inductiveautomation.opccom.wrapper.OleJob.run(OleJob.java:47)  
at com.jniwrapper.win32.MessageLoopThread$ThreadSynchronizedAction.run(MessageLoopThread.java:585)  
at com.jniwrapper.win32.MessageLoopThread$LoopThread.run(MessageLoopThread.java:527)[/code]

[code]8:34:30 PM DAServer[kop] Unable to advise server shutdown hook. Server may not support this functionality.

com.jniwrapper.win32.com.ComException: COM object method returns error code: 0x80040202; CONNECT\_E\_ADVISELIMIT  
at com.jniwrapper.win32.com.impl.IUnknownImpl.invokeStandardVirtualMethod(SourceFile:758)  
at com.jniwrapper.win32.com.impl.IUnknownImpl.invokeStandardVirtualMethod(SourceFile:737)  
at com.jniwrapper.win32.ole.impl.IConnectionPointImpl.advise(SourceFile:93)  
at com.inductiveautomation.opccom.wrapper.shutdown.ServerShutdownDispatcher.advise(ServerShutdownDispatcher.java:52)  
at com.inductiveautomation.opccom.COMServerImpl$ConnectServerJob.internalRun(COMServerImpl.java:701)  
at com.inductiveautomation.opccom.wrapper.OleJob.run(OleJob.java:47)  
at com.jniwrapper.win32.MessageLoopThread$ThreadSynchronizedAction.run(MessageLoopThread.java:585)  
at com.jniwrapper.win32.MessageLoopThread$LoopThread.run(MessageLoopThread.java:527)[/code]

Kepware has good connection with ignition

ignition and kepware in the same PC.

any clue?

i use windows 7 64Bit  
Ignition 7.7.1 RC3

Thanks

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<div class="post-metadata">

**Author:** ![illank86](https://avatars.discourse-cdn.com/v4/letter/i/c77e96/32.png) [@illank86](https://forum.inductiveautomation.com/u/illank86)\
**Post date:** [September 24, 2014, 1:49am UTC](https://forum.inductiveautomation.com/t/kepware-dcom/9087/2 "2014-09-24T01:49:21Z")

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now its works… after setting DCOM and restart the PC…