An Azure service that enables developers and testers to generate insights on how to improve the performance, scalability, and capacity usage of their application
Hi Hiroshi Tashiro,
grant yourself Storage Blob Data Reader or Contributor on the storage account used by the Playwright workspace, then check networking if the storage account has firewall or private endpoint enabled, temporarily enable Allow Azure services or allow your IP, next open the portal in incognito or a different browser and sign in again (portal cache breaks this more often than people admit), if it still fails open dev tools and confirm there are no 401 or 403 errors against the blob endpoint, if you see them it is still an access issue, also check there are no policies or conditional access rules blocking AAD tokens for storage, as a quick workaround try accessing the report via CLI or SDK instead of the portal, if that works then it is a portal issue and you will need to raise an Azure support ticket :)
short ver. RBAC > Network > Browser > DevTools > Support
rgds,
Alex