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diff --git a/doc/security/two_factor_authentication.md b/doc/security/two_factor_authentication.md
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--- a/doc/security/two_factor_authentication.md
+++ b/doc/security/two_factor_authentication.md
@@ -11,7 +11,10 @@ Two-factor authentication (2FA) provides an additional level of security to your
users' GitLab account. When enabled, users are prompted for a code generated by an application in
addition to supplying their username and password to sign in.
-Read more about [two-factor authentication (2FA)](../user/profile/account/two_factor_authentication.md)
+NOTE:
+If you are [using and enforcing SSO](../user/group/saml_sso/index.md#sso-enforcement), you might already be enforcing 2FA on the identity provider (IDP) side. Enforcing 2FA on GitLab as well might be unnecessary.
+
+Read more about [two-factor authentication (2FA)](../user/profile/account/two_factor_authentication.md).
## Enforce 2FA for all users **(FREE SELF)**