Please verify that the pipeline strong name is correct and that the pipeline assembly is in the GAC.

Posted: August 18, 2011  |  Categories: BizTalk Uncategorized

Ever had this error. I bet you are saying the solution is to to restart the host. I did this with one of my clients recently and found that it did not fix the problem. I got them to check that the assembly was in the GAC and it was. After several false starts i got them to run Fuslogvw.exe (Assembly Binding Log Viewer) and this showed the failed binding shown below;

*** Assembly Binder Log Entry  (18/08/2011 @ 9:59:07 a.m.) ***
The operation failed.
Bind result: hr = 0x80070002. The system cannot find the file specified.
Assembly manager loaded from:  C:\Windows\Microsoft.NET\Framework64\v2.0.50727\mscorwks.dll
Running under executable  C:\Program Files (x86)\Microsoft BizTalk Server 2010\BTSNTSvc64.exe
— A detailed error log follows.
=== Pre-bind state information ===
LOG: User = zbtsapphost
LOG: DisplayName = OracleInterfacePipeline, Version=, Culture=neutral, PublicKeyToken=5983166fdea5fae3 (Fully-specified)
LOG: Appbase = file:///C:/Program Files (x86)/Microsoft BizTalk Server 2010/
LOG: Initial PrivatePath = NULL
LOG: Dynamic Base = NULL
LOG: Cache Base = NULL
LOG: AppName = NULL
Calling assembly : (Unknown).
LOG: This bind starts in default load context.
LOG: Using application configuration file: C:\Program Files (x86)\Microsoft BizTalk Server 2010\BTSNTSvc64.exe.Config
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework64\v2.0.50727\config\machine.config.
LOG: Post-policy reference: OracleInterfacePipeline, Version=, Culture=neutral, PublicKeyToken=5983166fdea5fae3
LOG: GAC Lookup was unsuccessful.
LOG: Attempting download of new URL file:///C:/Program Files (x86)/Microsoft BizTalk Server 2010/OracleInterfacePipeline.DLL.
LOG: Attempting download of new URL file:///C:/Program Files (x86)/Microsoft BizTalk Server 2010/OracleInterfacePipeline/WSL.OracleInterfacePipeline.DLL.
LOG: Attempting download of new URL file:///C:/Program Files (x86)/Microsoft BizTalk Server 2010/OracleInterfacePipeline.EXE.
LOG: Attempting download of new URL file:///C:/Program Files (x86)/Microsoft BizTalk Server 2010/OracleInterfacePipeline/WSL.OracleInterfacePipeline.EXE.
LOG: All probing URLs attempted and failed.

The crtical line is highlighted in red. Why on earth is a BizTalk 2010 server using the net 2.0 framework machine.config file?

I managed to run exactly the same application on another BizTalk 2010 server and captured the assembly binding log. In this case the line highlighted in red was


and the application worked.

Now I was on to it. I checked the BTSNTSvc.exe.config and found that the following lines were missing

<startup useLegacyV2RuntimeActivationPolicy=”true”>
<supportedRuntime version=”v4.0″ />
<assemblyBinding xmlns=”urn:schemas-microsoft-com:asm.v1″>
<probing privatePath=”BizTalk Assemblies;Developer Tools;Tracking;Tracking\interop” />
<provider id=”sspi” type=”Microsoft.BizTalk.XLANGs.BTXEngine.SecurityServerChannelSinkProvider,Microsoft.XLANGs.BizTalk.Engine” securityPackage=”ntlm” authenticationLevel=”packetPrivacy” />
<channel ref=”tcp” port=”0″ name=””>
<provider ref=”sspi” />
<formatter ref=”binary” typeFilterLevel=”Full”/>

After addition of this to the config file and restarting the host the problem was solved.

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