Power BI Custom Visual Error Embedded for Customers

Hi ejQap ,

Thank you for reaching out to the Microsoft Community Forum.

This error typically arises when a custom visual cannot be properly rendered in Power BI Embedded reports.

Few potential causes and things to check:

1. Power BI Service Changes: Microsoft occasionally updates the Power BI service backend, which can unintentionally break compatibility with some custom visuals, especially in embedded contexts. Since you didn’t make any updates, this is a likely cause.

Note: Check the Power BI support page or the Power BI community forum to see if others have reported similar issues recently.

2. Visual Capabilities or API Version: Even if the visual hasn't been modified, an outdated apiVersion or unsupported capability in your custom visual’s manifest can cause issues in Embedded scenarios.

Note: Double-check the pbiviz.json file of the custom visual. Ensure it uses a supported API version (ideally v3.8.0 or higher). Compare it with the latest custom visual guidelines: Custom Visual Guidelines –-> Microsoft Docs.

3. Token Issue: Sometimes token mismatches, authorization changes, or domain policy updates can affect how visuals are rendered in embedded environments (especially for customer-embedded reports).

Note: Confirm the access token being used is valid and scoped correctly. Check browser console logs for CORS or authentication-related errors. Make sure any Content Security Policy headers aren’t blocking resources.

4. Power BI Visual Configuration: There may be a configuration in your embedded report setup or iframe code that prevents certain custom visuals from initializing correctly.

Note: Check your embedded report iframe settings. Ensure loadCustomVisualsFromAppPackage or loadCustomVisualsFromExtension (depending on how you're embedding) is configured properly.

Can you please check official documents and community forum threads.

Organization visuals in Power BI - Power BI | Microsoft Learn

Power BI usage scenarios: Embed for your organization - Power BI | Microsoft Learn

How to govern Power BI visuals inside your organization | Microsoft Power BI Blog | Microsoft Power BI

Deep dive in the organizational custom visuals | Microsoft Power BI Blog | Microsoft Power BI

Solved: Custom visuals and embedding options - Microsoft Fabric Community

Solved: Custom Visuals not displaying in the Power BI Serv... - Microsoft Fabric Community

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Thank you