error:80040154 on windows 7 64 bit mchine

Question

I have created on windows application with VS2010 on Windows 7 32bit machine. it is working fine on my production machine.

But When i am installing this application on client's server it generating error "System.Runtime.InteropServices.COMException (0x80040154): Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80040154."

Client's machine is widows 7 64bit.

i am using dlls to work word, excel and pdf.

Please help me to get out of this problem. i am stucked with this problem.

Answer 1

Hans solution ( https://stackoverflow.com/a/4021887/2019288 )

There are not many good reasons this would fail, especially the regsvr32 step. Run dumpbin /exports on that dll. If you don't see DllRegisterServer then you've got a corrupt install. It should have more side-effects, you wouldn't be able to build C/C++ projects anymore.

One standard failure mode is running this on a 64-bit operating system. This is 32-bit unmanaged code, you would indeed get the 'class not registered' exception. Project + Properties, Build tab, change Platform Target to x86.