Report frame appears but is blank, or shows a Power BI sign-in or permission message

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What you are seeing

The report frame appears but is blank, or shows a Power BI sign-in or permission message.

#Why it happens

Capable does not sign anyone in to Power BI. A secure report relies on the reader's own Microsoft session and their Power BI permissions; a report ID is embedded with automatic authentication, which still requires the reader to have access.

#What to do

Confirm the reader is signed in to Microsoft in the same browser and has been granted access to that report in Power BI. If the report should be visible to everyone, use a Publish-to-web link instead of a secure link.

#Limits that apply here

Limit

Value

What happens

Allowed report hosts

App.powerbi.com and app.fabric.microsoft

Anything else will not render.

Allowed URL shapes

Exactly one path segment: /view or /repo

/view must carry an 'r' query parameter (secure report link). /reportEmbed must carry a 'reportId' query parameter (public report link). Anything deeper or differently shaped fails validation.

Bare report ID format

A standard 36-character UUID

A UUID is turned into https://app.powerbi.com/reportEmbed?reportId=<id>&autoAuth=true. It always targets app.powerbi.com, never Fabric.

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