Hi @Sara ,
Do you use Page Viewer web part in SharePoint server to embed a Power BI Report Server report?
If true, make sure you are using the full-screen URL of the report, which add ?rs:embed=true
to the end of the URL:
More information for your reference:
https://social.technet.microsoft.com/wiki/contents/articles/39550.power-bi-create-report-and-publish-in-sharepoint.aspx
https://natechamberlain.com/2018/02/14/embedding-power-bi-report-server-pbirs-reports-in-sharepoint/
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