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Editorial Team
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Asked: 2026-05-20T07:22:06+00:00

I’m building my Visual Studio solution and in the output window there’s an error

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I’m building my Visual Studio solution and in the output window there’s an error just for one project.

In error tab:

Error   161 Cannot register type library "D:\Sites\Website\MyPortal.Website.Controllers\bin\Debug\MyPortal.Website.Controllers.tlb". Error accessing the OLE registry. (Exception from HRESULT: 0x8002801C (TYPE_E_REGISTRYACCESS)) MyPortal.Website.Controllers

In output tab:

Compile complete -- 0 errors, 153 warnings
  MyPortal.Website.Controllers -> D:\Sites\Website\MyPortal.Website.Controllers\bin\Debug\MyPortal.Website.Controllers.dll
c:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(3341,9): warning MSB3214: "D:\Sites\Website\MyPortal.Website.Controllers\bin\Debug\MyPortal.Website.Controllers.dll" does not contain any types that can be registered for COM Interop.
c:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(3341,9): error MSB3213: Cannot register type library "D:\Sites\Website\MyPortal.Website.Controllers\bin\Debug\MyPortal.Website.Controllers.tlb". Error accessing the OLE registry. (Exception from HRESULT: 0x8002801C (TYPE_E_REGISTRYACCESS))
========== Rebuild All: 8 succeeded, 1 failed, 0 skipped ==========

Any ideas?

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1 Answer

  1. Editorial Team

    I found out someone changed a property in the csproj.

    To solve the error:

    • You just have to right click the project,
    • choose Build tab
    • go to Output section
    • uncheck Register for COM interop
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