There should be an option to not cache credentials for data sources from connections with Power BI. This is a security issue and does not go well with customers.
Hi caching the credentials has a nasty side effect you may not be aware of. If the site you are on has a change password policy every few months etc..and n lock attempts, once the user changes the password and they open the pbix file it can lock them out as tries to log in multiple times. So the admin guys unlock the file and again , and the user opens the file it lock them out again . So . The work around is for the user to know to clear credentials before they open the file (not obvious) . The power bi file should only attempt once to log on if it fails stop!? or have a setting to force the user to log in each time. ie an option do not store credentials - could be per table level or global. se this link http://community.powerbi.com/t5/Desktop/Power-bi-locks-user-out-of-database-if-password-has-changed/m-p/185765#M81648
