Power BI Report Builder Stopped Seeing My Workspaces

Hey  frankielee ,

This issue usually happens due to authentication or API changes in Power BI Service, especially after updates. Here are a few steps you can try:

1) Sign Out and Back In: In Report Builder, go to File > Options > Power BI Service and sign out, then sign back in with your Power BI credentials. Sometimes tokens expire and cause this error.

2) Check Workspace Visibility: Recently, datasets from "My Workspace" often appear under Shared with me in Report Builder instead of the expected location. Try checking there. If possible, move your dataset to a dedicated or Premium workspace for better stability.

3) Verify Permissions and Tenant Settings: If you’re using an organizational account, ensure your admin has not changed tenant settings that restrict API access for paginated reports. External or guest users often face this issue.

4) Clear Cached Credentials: Go to Windows Credential Manager and remove any stored Power BI credentials, then restart Report Builder.

5) Check Network/Proxy Settings: If you are behind a corporate proxy, Report Builder might fail to authenticate. <system.net>

    <defaultProxy useDefaultCredentials="true"/>

</system.net>

6) Workaround: If the issue persists, you can create the paginated report directly from the Power BI Service (via Export > Paginated Report) and then open the .rdl in Report Builder.

For Detailed Information (Reference):

Dataset in My Workspace not showing up in Report Builder

Can't see workspace datasets when trying to connect with report Builder

Report Builder Unable to retrive workgroups or datasets from Powerbi error: 407 Proxy Authentication

Best Regards,
Nasif Azam