Guest account access challenges for volunteer SharePoint portal hub

BrianRMI 

It seems that you're facing challenges with guest account access for your volunteer SharePoint portal hub, particularly when volunteers are already logged into Microsoft accounts on their Windows computers or browsers.

Here are a few ideas, with AI helps, to mitigate this issue:

1. Clear browser cache and cookies: Encourage volunteers to clear their browser cache and cookies before accessing the hub. This can help remove any stored authentication information and prompt them to log in again with their guest accounts.
2. Provide clear instructions: Clearly communicate the steps volunteers need to take to access the hub without being prompted for their Microsoft credentials. For example, you can provide step-by-step instructions on how to open a private or incognito browser session and access the hub from there. Make sure the instructions are easy to follow and readily available.
3. Use direct URL links: Instead of relying on a landing page, provide direct URL links to the hub that bypass any authentication prompts. You can send these links to volunteers via email or provide them on a separate web page. When volunteers click on these links, they should be taken directly to the hub without being prompted for credentials.
4. Single Sign-On (SSO) integration: Explore the possibility of integrating a Single Sign-On solution with your SharePoint portal hub. This would allow volunteers to log in once using their guest accounts and then access the hub without further authentication prompts, even if they are logged into Microsoft accounts elsewhere.

Remember to test any changes or solutions in a controlled environment before rolling them out to your volunteers to ensure they work as intended and minimize any disruptions to their user experience.

Hope its helps!