If you are working with support for login related issues, and are asked to provide a log file, please follow the directions below:
Open an incognito window.
Navigate to https://community.powerbi.com
Right click anywhere on your screen & select "Inspect"
*Note: This page could either open on the side of your screen or the bottom 2/3rds of your screen.
Place a checkbox in the "Preserve log" box, located on the row below "Performance"
If applicable, pull the "Inspect" page down so that you can see Power BI again.
Select "Sign In"
Then select "Sign in to your Organization account"
Enter the credentials for your AAD account
When you are returned to the Power BI log in page again, pull the "Inspect" page back up or over.
In the "Filter" field, type "oauth2" - No need to press 'Enter' or 'Return', results will be rendered as you type.
If "oauth2" is rendered in the results, click on it
Then right-click and select "Save as HAR with content"
This is the file you return to the support team.