Using Regsvr32.exe a dll return error

I am getting the below error:

DllRegisterServer in my.dll failed.
Return code was: 0x80004005

I think that the error 0x80004005 means unspecified error? Can this be caused by other dll's for the dll that I am trying to register? Thanks for any information.

The error 0x80004005 normally denotes "Access denied" message, check the below link for some information:

http://support.microsoft.com/kb/295297

Thanks for the reply. Can you tell me where I can find that error code that is "Access Denied"?

You can type CMD /K NET HELPMSG 0005

where 0005 (0x80004005) is the error code.