Getting Error When using Power BI Add-in in Power Point

Hi FarhanAhmed ,

This issue is related to the browser Power BI uses to open up the pop-up connector window. Depending on your current device and version of Power BI, it may be trying to open this window in IE11, which is no longer supported for use with Smartsheet.

There are a few things you can try to resolve this:

1. Try adjusting the Power BI settings in File > Options > Security > Authentication Browser > Enable  "Use my default browser"
2. Update your computer's Default Browser to Chrome, Edge, or Firefox through Start > Default Apps > Browser
3. Try uninstalling Power BI, restart your computer, and re-install Power BI from the Microsoft Store

similar error refer:

https://community.powerbi.com/t5/Desktop/Cannot-refresh-data-Browser-not-supported/td-p/2087069 

Did I answer your question? Mark my post as a solution!

Best Regards

Lucien