Hi CraigCB,
I go through the post carefully, as you can see the link: Connection properties
“Save password Select this check box to save the username and password in the connection file. The saved password is not encrypted. Clear this check box to log on to the data source, if a user name and password are required, the first time that you access it. This check box does not apply to data retrieved from a text file or a Web query.”
May I know did you select the box before you send it to other users in email attachment? As it seems that data source is encrypted , please select the box. typing right username/password here, then share it and check if users can refresh data without seeing the prompt. Additionally, may I know what kind of data the dashboard workbook connected?
Regards,
Clark