Unable to Sign-in in Embedded Website or Portal

Hi Anonymous ,

You can try changing your browser to see if it works, Refer to the Conditions and troubleshooting in the following document, you may find the answer:

Embed a report in a secure portal or website

Filter a report using query string parameters in the URL

"Some browsers require you to refresh the page after sign-in, especially when using InPrivate or Incognito modes."

"Query string filtering doesn't work with Publish to web or Export to PDF."

"Embed with report web part in SharePoint Online doesn't support URL filters."

Best Regards,
Community Support Team _ Joey
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.