Hi @Hany El-Gabbas ,
this error indicates that you need to use a different sign-in method to access the resource. This typically happens when your organization has configured federated authentication for Azure AD.
To resolve this issue, you can try signing in with a different account that has the necessary permissions to access the resource. Alternatively, you can try clearing your browser cache and cookies, and then attempting to sign in again.
Do you have another email you could use for this? Also, is this a new issue that you're encountering with the same email address, or have you never been able to log in this way?
Have you reached out to your admin to see if you're lacking permissions?
Please let me know and I can help you further.