0x800400154 "Class not registered" error when calling CorbindToRunitmeEx hosting API

Question

Hi, we have a very strange problem when trying to start CLR inside our unmanaged host. We have 4 clients that get this error when our hosting process tries to acquire pointer to ICLRRuntimeHost using CorBindToRuntimeEx. The HRESULT is 0x800400154 which is "CLass not registered." I have searched everywhere and can't find anything on this. NET 2.0 is installed. Checked theire registry and runtime engine is registered. DCOM is enabled. Did anybody expirience this problem? Or can anybody suggest where to look for solution? Thank you.

Answer 1

Hello

I suggest that we first narrow down the problem to either the system enviroment or the application itself. Could you please build a simplest CLR host application according to http://blogs.msdn.com/calvin_hsia/archive/2006/08/07/691467.aspx and test it on the client?

If a very simple sample fails with 0x800400154 too, we shall focus on the system environment of the clients next:
1. Are the 4 clients installed with .NET 4?
2. Are the 4 clients x86 or x64 systems?
3. Are they equiped with the latest service packs of .NET 2?
4. Could you please consider repairing the .NET 2 installation according to the aritcle http://support.microsoft.com/default.aspx/kb/908077?

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Regards,
Jialiang Ge
MSDN Subscriber Support in Forum
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Answer 2

Hello

How are you? Could you please let me know the result of my suggestion? If you have any questions, please feel free to tell me.

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Regards,
Jialiang Ge
MSDN Subscriber Support in Forum
If you have any feedback of our support, please contact [e-mail].
Please remember to mark the replies as answers if they help and unmark them if they provide no help.
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Answer 3

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Regards,
Jialiang Ge
MSDN Subscriber Support in Forum
If you have any feedback of our support, please contact [e-mail].
Please remember to mark the replies as answers if they help and unmark them if they provide no help.
Welcome to the All-In-One Code Framework! If you have any feedback, please tell us.