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's visibility was true. But I need to hide the excel at the time of execution. So I changed the visibility to false. Like,

  _destExcelApp = new Excel.ApplicationClass();
  _destExcelApp.Visible = false;

Now its showing an exception like

Call was rejected by callee. (Exception from HRESULT: 0x80010001 (RPC_E_CALL_REJECTED))

How to solve this one?

Answer 1

I ran into this same error being thrown when I deployed my application onto a machine without a fully activated and licensed installation of Excel. I spent hours trying to diagnose the issue. Make sure you check your Office installations to make sure they are complete.

Answer 2

I solved this behaviour with the help of this question:

Strange behaviour of "Call was rejected by callee." exception with Excel

The issue was simply that the Workbook.Open hadn't finished when I gave a Worksheet.SaveAs command. So sometimes, the script would work, sometimes not.

I simply added a pause in the script after Workbook.Open and it worked. I went on to find a property Ready, which allowed me to do exactly what I wanted:

$excel = New-Object -ComObject "Excel.Application" -ea Stop
$wb = $excel.Workbooks.Open($workbook)
$sheet = $wb.Sheets("List")
while (-not $excel.Ready) {
     sleep 1
}
$sheet.SaveAs($csvpath,6)

So in my case, it had nothing to do with non-activated or corrupted Excel installations.

Answer 3

Ensure that MS Word/Excel is not showing a dialog box that needs a response.

I set a breakpoint on the line that caused the failure, then set .Visible to true in PowerShell, to find this:

$word.Visible = $true

After I clicked 'Yes' and updated the settings, after I re-ran my scripted COM interactions, they succeeded.

Answer 4

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.