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OpcLabs.BaseLib.Browsing.BrowseException - exception while browsing

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15 Jun 2022 07:07 #10976 by micham
Hi,

The new version was installed. The same error persists. See below. Please advise.

Thank you
Michael

Invalid class string

+ This error usually means that the ProgID of the OPC Server you used is not registered on the specified computer.

+ The machine name was ''.

+ The server class used was 'Tunneller:172.31.250.199:OPC.SimaticNET.'.

+ Execution details: HasNativeClient=True, HasNetApiClient=True, ProcessBitness=32.

+ The client method called (or event/callback invoked) was 'BrowseNodes'.

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14 Jun 2022 17:40 #10975 by support
Hello.

There were changes (and fixes) in the related area. Please retest with QuickOPC 2022.1, build 5.63.232 or later.

Best regards

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14 Jun 2022 09:58 #10970 by micham
Hi,

It is 2021.3,
Build 5.62.1032.1

Thank you.

Michael

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14 Jun 2022 08:29 #10969 by support
Hello,
which QuickOPC version and build are you using?

Best regards

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14 Jun 2022 07:31 #10968 by micham
Hi,

We got this exception while trying to connect to a local OPC Server (Matrikon OPC DA Tunneller). See below. When connecting with Matrikon OPC Explorer, browsing is possible and there is no error message.

Please advise.

Thank you.
Michael

Exceptions

Type: OpcLabs.BaseLib.Browsing.BrowseException
Data:
HelpLink:
HResult: -2146233088 (0x80131500)
InnerException:
OpcLabs.BaseLib.Runtime.InteropServices.ExtendedCOMException (0x800401F3): Invalid class string
+ This error usually means that the ProgID of the OPC Server you used is not registered on the specified computer.
+ The server class used was 'Tunneller:172.31.250.199:OPC.SimaticNET.', the machine name was ''.
+ Execution details: HasNativeClient=True, HasNetApiClient=True, ProcessBitness=32.
+ The client method called (or event/callback invoked) was 'BrowseNodes'.
Data:
OpcLabs.EasyOpc.Implementation.ErrorEnhancement.Processed: True
OpcLabs.EasyOpc.Implementation.DAErrorEnhancement.Processed: True
ErrorCode: -2147221005
HelpLink:
HResult: -2147221005 (0x800401f3)
InnerException:
Message:
Invalid class string
+ This error usually means that the ProgID of the OPC Server you used is not registered on the specified computer.
+ The server class used was 'Tunneller:172.31.250.199:OPC.SimaticNET.', the machine name was ''.
+ Execution details: HasNativeClient=True, HasNetApiClient=True, ProcessBitness=32.
+ The client method called (or event/callback invoked) was 'BrowseNodes'.
Source:
StackTrace:
TargetSite:
XML Qualified Name 2: opcfoundation.org/DataAccess/:E_FAIL.0x800401F3
IsEmpty: False
Name: E_FAIL.0x800401F3
Namespace: opcfoundation.org/DataAccess/
Message: Problem browsing OPC Data Access (OPC-DA) branches.
Source:
StackTrace:
TargetSite:

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