Excel error HRESULT: 0x800A03EC while trying to get range with cell's name

Question

I am working with Window Service project. that have to write data to a sheet in Excel file in a sequence times.

But sometimes, just sometimes, the service throw out

Answer 1

The meaning of the completely undocumented error 800A03EC (shame on Microsoft!) is something like "OPERATION NOT SUPPORTED".

It may happen

• when you open a document that has a content created by a newer Excel version, which your current Excel version does not understand.
• when you save a document to the same path where you have loaded it from (file is already open and locked)

But mostly you will see this error due to severe bugs in Excel.

• For example Microsoft.Office.Interop.Excel.Picture has a property "Enabled". When you call it you should receive a bool value. But instead you get an error 800A03EC. This is a bug.
• And there is a very fat bug in Exel 2013 and 2016: When you automate an Excel process and set Application.Visible=true and Application.WindowState = XlWindowState.xlMinimized then you will get hundreds of 800A03EC errors from different functions (like Range.Merge(), CheckBox.Text, Shape.TopLeftCell, Shape.Locked and many more). This bug does not exist in Excel 2007 and 2010.