how to solve Exception:Call was rejected by callee. (Exception from HRESULT: 0x80010001 (RPC_E_CALL_REJECTED)) in C#?

Question

I have written a C# code in console application to open two excels and copy and paste data from one excel to another excel. It was working fine until the destination excel\'

Answer 1

I was facing the same error and many solutions suggested were not working for me. I had an application running in windows 8 and I found that the problem was Excel always asking to choose default application for "xlsx" extensions. When executing the application no window dialog appeared, just the error was shown.

I solved the problem going to Control Panel > Programs > Default Programs and setting Microsoft Office Excel 2016 as default program for xlsx files.