PLEASE Help - External Online Workspace Access Problem

Hi alexijackson2 ，

Check if the user sharing has a power bi pro license, if the report is in the premium capacity, then the power bi free user can, in addition you can try the following ways to share.

 after you share the workspace to the guest user, provide them with the Tenant URL.

To find the tenant URL, follow these steps.

1. In the Power BI service, in the header menu, select help (?), then select About Power BI.

2. Look for the value next to Tenant URL. Share the tenant URL with your allowed guest users.

By the Tenant URL, they can sign in to the guest user account and see any content you have shared with them.

Refer:

https://community.powerbi.com/t5/Service/Allowing-external-guests-into-Power-BI-Service-workspace/m-p/2389122 

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Best Regards

Lucien