Custom authentication in PowerBI Desktop - need UniqueId or LocalStorage

Hi MannyKin,

There does appear to be an error when emailing the team directly, but emails are getting through (it's probably a group email, and one of the members' addresses is causing an error).

You have correctly surmised that you need your visual to be certified to use the local storage API, so when MS answers your query, they will probably come back with a response along these lines.

Unfortunately, I cannot provide any positive answers to your additional proposals. Visuals in Power BI are essentially considered to be independent of each other and have no more knowledge than they should. The visual instance is taken care of by the main window and not passed to the visual, and anything about Power BI itself might be regarded as identifying information about an installation that a visual should not know about for privacy reasons, so there is nothing unique to hook into here in terms of identifying or distinguishing the visual from others from within the iframe sandbox.

You could generate a UUID internally to your visual, which could serve as "unique enough" and persist as a separate property in tandem with the token property. However, I'm unsure if that would be meaningful to the authenticating system and may not further your requirement.

The newly introduced authentication API is the only official way of handling authentication within visuals. Still, I believe this needs to use MS Entra/Azure AD as the authenticating endpoint. I'm not sure if this would meet your needs. Unfortunately, I have no experience with this API yet, but it could be worth following up with MS via email if you have further questions.

Good luck,

Daniel