Hi @Murphys110
Ok, so when ever the file is ready for export it is not giving you any option to save instead it is opening directly in you machines excel
Check where the excel is stored, I believe it is storing in the downloads/temp folder?
If so then you can change your browser settings to ask when the download is available, so that once it is ready to download then it will show an popup to save the file instead opening automatically
If you are using chrome go to settings search for ask and check this option is enabled

From now it will not download automatically but will show a pop as save as, once you click that then it will prompt you to save the file and you need to provide the full path of the file with filename
If this is not case apolozie, please add more details how it is automatically opening
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Thanks,
Srini