How to customize the login error page (SSO)

Hi XWiki Community,

On the XWiki instance of our company (hosted by XWiki SAS), we enabled the SSO authentification and require to be in a group of our AzureAD.

Here is the webpage in case the user does not have the access:

Is it possible somehow to customize this page?
We would like to a specify a message with the procedure to request access.

Thank you in advance!

Best Regards,
Luc

I’m think this page is provided by azure not your xwiki.

Simpel