Disable - Log in Request - Personal Desktop MS Power BI

Hi CTomk 

Welcome to the Microsoft Fabric Community Forum.
 

If you are experiencing persistent login prompts in Microsoft Power BI Desktop while using a personal account on Windows 11 with a paid Microsoft Online subscription, this is often due to cached credentials or conflicts with the Windows Authentication Manager (WAM).

To address this, please clear any stored credentials by going to File > Options and Settings > Data Source Settings > Clear Permissions, as previously suggested by Akash_Varuna 

You may also consider disabling WAM authentication by adding a DWORD entry named UseWAM with a value of 0 in the Windows Registry under HKEY_CURRENT_USER\Software\Microsoft\Power BI Desktop. This will switch Power BI Desktop to legacy authentication and can help resolve repeated login issues. Additionally, in Power BI Desktop, navigate to File > Options > Global > Security and uncheck Require user authentication for single sign-on to prevent unnecessary sign-in prompts. If the problem continues, performing a clean reinstallation of Power BI Desktop may help reset configuration and authentication settings.

Thank you for being part of Fabric Community Forum.

Regards,
Karpurapu D,
Microsoft Fabric Community Support Team.