Thank you for choosing Microsoft Community.
You might have a duplicate user issue here.
Here are a few steps you can take to resolve this:
Check for Duplicate Contacts: Go to your Power Pages site and check the 'Contacts' section. Look for any duplicate entries that might be using the same email address as your Microsoft Entra ID. If you find any, delete or merge them.
Clear Browser Cache: Sometimes, cached data can cause issues. Clear your browser's cache and cookies, then try signing in again.
Identity Provider Settings: Double-check your identity provider settings in Power Pages. Make sure that Microsoft Entra ID is correctly configured. You can find more details on setting up Microsoft Entra ID with Power Pages here.
Check Known Issues: There might be known issues related to Microsoft Entra ID and Power Pages. You can check the known issues page for any relevant information.
Restart the Site: Sometimes, changes to authentication settings take a few minutes to reflect. Restart your site from the admin center to ensure all changes are applied.
If these steps don't resolve the issue, you might need to reach out to Microsoft support directly for further assistance.
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Happy to help
Robu 1
