question

Hi @Abel van der Windt,

Excel's interface is not displayed for user interaction, but you are using the optional 2nd parameter of exceldeletesheet() which requires the user to confirm the action. Because Excel's interface is not available, you can't confirm, and things freeze up. Here is what is going on in Windows Task Manager:

Even though you can't see Excel, it is waiting for your input, and so nothing happens.

Try removing the optional 2nd parameter from your call to exceldeletesheet(), or try explicitly setting it to 0.

Also, I did see the same error you mentioned the first time I tried your code ("FlexSim is unable to delete Sheet1"). However, after dismissing the error, I started Excel via double-clicking the test.xlsx file. Then after closing Excel (and making sure there were no remaining Excel processes listed in Task Manager) then your code seems to work properly (minus the optional 2nd param discussed above), and I haven't been able to duplicate the problem since.

Let us know what you find.