Hi @HBK007
Thank you for sharing your issue on Microsoft Q&A.
I understand that you want to enable CAPTCHA for SAML integration on the Office 365 login page. Implementing CAPTCHA in a SAML-integrated application requires specific configurations to ensure that users go through a username/password prompt, followed by CAPTCHA verification, and then multi-factor authentication (MFA). Since you mentioned that your setup is entirely cloud-based without ADFS.
As of now in Azure, if the application is configured identity is managed by Entra, there is no option to require a CAPTCHA in the middle of the user authentication process. Users can only authenticate using their username and password, along with a multi-factor authentication (MFA) prompt. To implement a CAPTCHA requirement, try to check with your application team to see if there is any way to require CAPTCHA code after authenticating in Entra ID.
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Best regards,
Harshitha Eligeti.