> ## Documentation Index
> Fetch the complete documentation index at: https://docs.callforpaper.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Authentication & SSO FAQ

> Frequently Asked Questions about Authentication

# Authentication & SSO – Frequently Asked Questions

**Q: Which SSO providers are supported today?**\
A: Google, GitHub, LinkedIn, and Microsoft (Azure AD/Office 365). Apple, Twitter/X, ORCID, and more are coming in the next 4–6 weeks.

**Q: Can I disable password login completely?**\
A: Yes — contact support to enforce SSO-only for your organization (available on Enterprise plans).

**Q: The SSO button is grayed out. What’s wrong?**\
A: Your browser is blocking third-party cookies. Enable them or use the magic-link email option.

**Q: I didn’t receive the magic link.**\
A: Check spam/promotions folder. You can request a new link instantly.

**Q: Is two-factor authentication (2FA) available?**\
A: Yes — automatically enabled when you log in via Google or Microsoft if 2FA is active on those accounts.