When we want to export a report to Excel, which has for example more than 500 rows, not all rows are displayed in Excel. This is because of a time-out problem, which occurs after a certain time or a certain size of the report. The problem can be solved when limit of rows to be exported will be increased on the one hand, on the other hand the time before a time-out happens can also be increased. But this is not the aim. Our requirement is that there should come up an error message, when a time-out has occured, so that we know, that not all rows of the report were exported to Excel succesfully.