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Home > Success Center > Server & Application Monitor (SAM) > Job Engine Agent Plug-in Load Failed

Job Engine Agent Plug-in Load Failed


When clicking View plug-ins in the Manage Agents page, the following error is displayed for Job Engine Agent Plug-in:

Plug-in Load Failed

Re-installing the plugin does not fix the issue.


The error similar to one of the following also appears in the agent log on the remote computer:

  • [ERROR] WorkerProcessController::RegisterWorkerProcess - pluginId [JobEngine], failed to complete worker process registration
  • System.DllNotFoundException: Unable to load DLL 'sqlceme35.dll'


  • All SAM versions
  • Windows Server


The .NET prerequisite features are missing or the SQL Compact Edition x32 and x64 versions do not match


Install the .NET prerequisites.

  1. Ensure that the following .NET prerequisites are installed:
  • .NET 2.0 layer
  • .NET layer for WoW64
  • Repair Visual C++ 2013 x86 and x64
  • Restart Agent service
  1. To install the prerequisites, refer to:


Correct the SQL Compact Edition issue.

  1. For the SQL CE Issue please try installing SQL CE x32 AND SQL CE x64 on the target Agent Machine.
  2. It's a known issue detailed in the following Microsoft KB:
    FIX: You receive an error message when you run a SQL Server Compact 3.5-based application after you install the 32-bit version of SQL Server Compact Edition 3.5 Service Pack 2 on an x64 computer  (© 2016 Microsoft, available at, obtained on August 24, 2016.)


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