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Editorial Team
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Asked: 2026-05-11T22:35:00+00:00

When trying to install my 32bit service on a Windows 64bit machine my installer

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When trying to install my 32bit service on a Windows 64bit machine my installer places the files in SysWOW64 directory and when I attempt to start the service an event is written to the event log, the log shows:

“Service cannot be started. System.IO.FileNotFoundException: Could not load file or assembly ‘System.ServiceModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089’ or one of its dependencies. The system cannot find the file specified.
File name: ‘System.ServiceModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089′”

I have copied the files manually to the System32 directory but this makes no difference.

Any suggestions as to why my service won’t start?

Thanks

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1 Answer

  1. Editorial Team

    It looks like the service fails to load the assembly System.ServiceModel on startup.
    Is either .NET Framework 3.0 or 3.5 installed on the machine?

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