COM object with CLSID {00024500-0000-0000-C000-000000000046} is either not valid or not registered

Question

In my application there is a functionality to show an excel sheet.Due to some reason we need to uninstall Microsoft Office. Now the above functionality is not working and I am getting following error.

COM object with CLSID {00024500-0000-0000-C000-000000000046} is either not valid or not registered.

Any Ideas how do I resolve this without re-installing Microsoft Office?

Answer 1

Given that you've installed Office the COM object you need will be unregistered.

The only way is to either reinstall Office or install the Office Tools Runtime

Answer 2

You're going to have to rewrite your code that processes Excel spreadsheets without using Office automation then. There's plenty of library suggestions here

http://stackoverflow.com/questions/151005/create-excel-xls-and-xlsx-file-from-c

That question is for creation but most (if not all!) of these will read too.