Dear Dennis Bottjer,
Good day to you!
I hope you are doing well. Thanks for reaching out to our Microsoft Community Forum. We will be happy to help you.
I am sorry to hear that you are having issues embedding a Loop component within SharePoint pages. Based on your description, I have tested this on my end and was able to embed the Loop component in SharePoint using the Embed web part. Here is a screenshot for your reference:
However, based on your error, this issue appears to be related to authentication settings. In this situation, we need to collect some logs for further in-depth troubleshooting.
As community moderators, we have limited resources for in-depth troubleshooting. We are unable to request a remote session to collect logs and other information.
However, Microsoft has a dedicated support team equipped to handle such issues. I recommend contacting Microsoft technical support for assistance. They have the expertise and tools to help you. Here’s the support document with contact details: Get support - Microsoft 365 admin | Microsoft Learn.
Additionally, if you are part of an organization, your Microsoft administrator can generate a support ticket through the admin portal. For convenience, here is the portal link: Microsoft 365 Admin Center.
I apologize for any inconvenience.
Thank you for your understanding. Your cooperation and contributions are greatly appreciated.
Kind Regards,
Nahid Sultan