Hi
Does your dataset only contain Excel data source? If that is the case, firstly, right click your Excel file and select “Properties”, check the location of the Excel file, add excel name in the location and use the location as full path.
Secondly, check your user account in the Settings of your computer, enter this user account(domain\user in my scenario) as Windows username when adding Excel data source under gateway, and enter relevant password. This way, you should have no issues setting schedule refresh for your dataset using on-premises gateway.
However, if you combine Excel data source and other data sources in your dataset, you will also need to add other data sources under on-premises gateway. Otherwise, you will be prompted to use personal gateway.
Thanks,
Lydia Zhang