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Cannot Register Type Library Error Accessing The Ole Registry

Cannot register type library error accessing the OLE registry

OLE (Object Linking and Embedding) is a technology that allows applications to share data and functionality. A type library is a file that contains information about the types, interfaces, and methods of an OLE component. Registering a type library allows other applications to use the OLE component.

Cannot Register Type Library Error Accessing The Ole Registry

However, sometimes registering a type library may fail and produce an error message like this:

Cannot register type library "C:\path\to\file.tlb". Error accessing the OLE registry. (Exception from HRESULT: 0x8002801C (TYPE_E_REGISTRYACCESS))

This error means that the user or application does not have sufficient permissions to access or modify the OLE registry, which is a part of the Windows registry that stores information about OLE components.

How to fix this error?

There are several possible solutions to fix this error, depending on the cause and the context. Here are some common methods:

  • Run as administrator: If you are trying to register a type library from a command prompt or a Visual Studio project, make sure you run them as administrator. You can do this by right-clicking on the icon or shortcut and selecting "Run as administrator". This will grant you elevated privileges to access and modify the OLE registry.

  • Copy the file to a different location: If you are trying to register a type library from a system folder (such as C:\Windows\System32 or C:\Windows\SysWOW64), you may encounter permission issues. Try copying the file to a different location (such as C:\Temp) and register it from there.

  • Use regtlib.exe or regtlibv12.exe: These are command-line tools that can register and unregister type libraries. They are usually located in C:\Windows\Microsoft.NET\Framework\v4.0.30319 or C:\Windows\Microsoft.NET\Framework64\v4.0.30319. You can use them by typing regtlib.exe "C:\path\to\file.tlb" or regtlibv12.exe "C:\path\to\file.tlb" in a command prompt (run as administrator).

  • Change the project settings: If you are trying to register a type library from a Visual Studio project, you may need to change some settings in the project properties. For example, you can uncheck the option "Register for COM interop" if your project does not need to expose its types to COM clients. You can also change the option "Target CPU" to match the bitness of your system (x86 or x64).


The following sources were used to create this article:

  • [Visual Studio - TYPE_E_REGISTRYACCESS]

  • [unable to register the type library: Register TypeLib failed; code ...]

  • [How to overcome regtlibv12 error and register a type library (OLE)?]


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