Qt, Excel crashes when selecting a work page?

Question

Qt

QAxObject* excel = new QAxObject( "Excel.Application", 0 );
    excel->dynamicCall("SetVisible(bool)",true);
    QAxObject *workbooks = excel->querySubObject( "Workbooks" );
    QAxObject *workbook = workbooks->querySubObject("Add()");

    QAxObject *sheets = workbook->querySubObject( "Worksheets" );
    QAxObject *sheet1 = sheets->querySubObject( "Item( int )", 1 );
    sheet1->dynamicCall("SetName(const QString&)", QVariant("Лист1"));

It crashes all the time with an error

QAxObject *sheets = workbook->querySubObject( "Worksheets" );

But break the whole Internet everyone does this and it works for them?
Qt 5.5 Excel 2013

Answer 1

This code works for me with Qt 5.6 and MS Excel 2013.
So you have some problems with the office.